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| 1 | Role of the Ilizarov non-free bone plasty in the management of long bone defects and nonunion: Problems solved and unsolved显示文摘BACKGROUND Ilizarov non-free bone plasty is a method of distraction osteogenesis using the Ilizarov apparatus for external fixation which originated in Russia and was disseminated across the world. It has been used in long bone defect and nonunion management along with free vascularized grafting and induced membrane technique. However, the shortcomings and problems of these methods still remain the issues which restrict their overall use.AIM To study the recent available literature on the role of Ilizarov non-free bone plasty in long bone defect and nonunion management, its problems and the solutions to these problems in order to achieve better treatment outcomes.METHODS Three databases(Pub Med, Scopus, and Web of Science) were searched for literature sources on distraction osteogenesis, free vascularized grafting and induced membrane technique used in long bone defect and nonunion treatment within a five-year period(2015-2019). Full-text clinical articles in the English language were selected for analysis only if they contained treatment results,complications and described large patient samples(not less than ten cases for congenital, post-tumor resection cases or rare conditions, and more than 20 cases for the rest). Case reports were excluded.RESULTS Fifty full-text articles and reviews on distraction osteogenesis were chosen.Thirty-five clinical studies containing large series of patients treated with this method and problems with its outcome were analyzed. It was found that distraction osteogenesis techniques provide treatment for segmental bone defects and nonunion of the lower extremity in many clinical situations, especially in complex problems. The Ilizarov techniques treat the triad of problems simultaneously(bone loss, soft-tissue loss and infection). Management of tibial defects mostly utilizes the Ilizarov circular fixator. Monolateral fixators are preferable in the femur. The use of a ring fixator is recommended in patients with an infected tibial bone gap of more than 6 cm. High rates of successful treatment were reported by the authors that ranged from 77% to 100% and depended on the pathology and the type of Ilizarov technique used. Hybrid fixation and autogenous grafting are the most applicable solutions to avoid after-frame regenerate fracture or deformity and docking site nonunion.CONCLUSION The role of Ilizarov non-free bone plasty has not lost its significance in the treatment of segmental bone defects despite the shortcomings and treatment problems encountered. | Dmitry Y Borzunov Sergei N Kolchin Tatiana A Malkova | 2020 | World Journal of Orthopedics2020,11,6: | 13 |
| 2 | International recognition of the Ilizarov bone reconstruction techniques: Current practice and research (dedicated to 100th birthday of G. A. Ilizarov)显示文摘The Ilizarov method is one of the current methods used in bone reconstruction.It originated in the middle of the past century and comprises a number of bone reconstruction techniques executed with a ring external fixator developed by Ilizarov GA.Its main merits are viable new bone formation through distraction osteogenesis,high union rates and functional use of the limb throughout the course of treatment.The study of the phenomenon of distraction osteogenesis induced by tension stress with the Ilizarov apparatus was the impetus for advancement in bone reconstruction surgery.Since then,the original method has been used along with a number of its modifications developed due to emergence of new fixation devices and techniques of their application such as hexapod external fixators and motorized intramedullary lengthening nails.They gave rise to a relatively new orthopedic subspecialty termed“limb lengthening and reconstruction surgery”.Based on a comprehensive literature search,we summarized the recent clinical practice and research in bone reconstruction by the Ilizarov method with a special focus on its modification and recognition by the world orthopedic community.The international influence of the Ilizarov method was reviewed in regard to the origin country of the authors and journal’s rating.The Ilizarov method and other techniques based on distraction osteogenesis have been used in many countries and on all populated continents.It proves its international significance and confirms the greatest contribution of Ilizarov GA to bone reconstruction surgery. | Tatiana A Malkova Dmitry Y Borzunov | 2021 | World Journal of Orthopedics2021,12,8: | 8 |
| 3 | Ilizarov bone transport combined with the Masquelet technique for bone defects of various etiologies (preliminary results)显示文摘BACKGROUND The Ilizarov bone transport(IBT)and the Masquelet induced membrane technique(IMT)have specific merits and shortcomings,but numerous studies have shown their efficacy in the management of extensive long-bone defects of various etiologies,including congenital deficiencies.Combining their strong benefits seems a promising strategy to enhance bone regeneration and reduce the risk of refractures in the management of post-traumatic and congenital defects and nonunion that failed to respond to other treatments.AIM To combine IBT and IMT for the management of severe tibial defects and pseudarthrosis,and present preliminary results of this technological solution.METHODS Seven adults with post-traumatic tibial defects(subgroup A)and nine children(subgroup B)with congenital pseudarthrosis of the tibia(CPT)were treated with the combination of IMT and IBT after the failure of previous treatments.The mean number of previous surgeries was 2.0±0.2 in subgroup A and 3.3±0.7 in subgroup B.Step 1 included Ilizarov frame placement and spacer introduction into the defect to generate the induced membrane which remained in the interfragmental gap after spacer removal.Step 2 was an osteotomy and bone transport of the fragment through the tunnel in the induced membrane,its compression and docking for consolidation without grafting.The outcomes were retrospectively studied after a mean follow-up of 20.8±2.7 mo in subgroup A and 25.3±2.3 mo in subgroup B.RESULTS The“true defect”after resection was 13.3±1.7%in subgroup A and 31.0±3.0%in subgroup B relative to the contralateral limb.Upon completion of treatment,defects were filled by 75.4±10.6%and 34.6±4.2%,respectively.Total duration of external fixation was 397±9.2 and 270.1±16.3 d,including spacer retention time of 42.4±4.5 and 55.8±6.6 d,in subgroups A and B,respectively.Bone infection was not observed.Postoperative complications were several cases of pin-tract infection and regenerate deformity in both subgroups.Ischemic regeneration was observed in two cases of subgroup B.Complications were corrected during the course of treatment.Bone union was achieved in all patients of subgroup A and in seven patients of subgroup B.One non-united CPT case was further treated with the Ilizarov compression method only and achieved union.After a follow-up period of two to three years,refractures occurred in four cases of united CPT.CONCLUSION The combination of IMT and IBT provides good outcomes in post-traumatic tibial defects after previous treatment failure but external fixation is longer due to spacer retention.Refractures may occur in severe CPT. | Dmitry Y Borzunov Sergey N Kolchin Denis S Mokhovikov Tatiana A Malkova | 2022 | World Journal of Orthopedics2022,13,3: | 6 |
| 4 | What operation for recurrent rectal prolapse after previous Delorme's procedure? A practical reality显示文摘AIM: To report our experience with perineal repair(Delorme's procedure) of rectal prolapse with particular focus on treatment of the recurrence.METHODS: Clinical records of 40 patients who underwent Delorme's procedure between 2003 and 2014 were reviewed to obtain the following data: Gender; duration of symptoms, length of prolapse, operation time, ASA grade, length of post-operative stay, procedure-related complications, development and treatment of recurrent prolapse. Analysis of post-operative complications, rate and time of recurrence and factors influencing the choice of the procedure for recurrent disease was conducted. Continuous variables were expressed as the median with interquartile range(IQR). Statistical analysis was carried out using the Fisher exact test.RESULTS: Median age at the time of surgery was 76 years(IQR: 71-81.5) and there were 38 females and 2 males. The median duration of symptoms was 6 mo(IQR: 3.5-12) and majority of patients presented electively whereas four patients presented in the emergency department with irreducible rectal prolapse. The median length of prolapse was 5 cm(IQR: 5-7), median operative time was 100 min(IQR: 85-120) and median post-operative stay was 4 d(IQR: 3-6). Approximately16% of the patients suffered minor complications such as- urinary retention, delayed defaecation and infected haematoma. One patient died constituting postoperative mortality of 2.5%. Median follow-up was 6.5 mo(IQR: 2.15-16). Overall recurrence rate was 28%(n = 12). Recurrence rate for patients undergoing an urgent Delorme's procedure who presented as an emergency was higher(75.0%) compared to those treated electively(20.5%), P value 0.034. Median time interval from surgery to the development of recurrence was 16 mo(IQR: 5-30). There were three patients who developed an early recurrence, within two weeks of the initial procedure. The management of the recurrent prolapse was as follows: No further intervention(n = 1), repeat Delorme's procedure(n = 3), Altemeier's procedure(n = 5) and rectopexy with faecal diversion(n = 3). One patient was lost during follow up.CONCLUSION: Delorme's procedure is a suitable treatment for rectal prolapse due to low morbidity and mortality and acceptable rate of recurrence. The management of the recurrent rectal prolapse is often restricted to the pelvic approach by the same patientrelated factors that influenced the choice of the initial operation, i.e., Delorme's procedure. Early recurrence developing within days or weeks often represents a technical failure and may require abdominal rectopexy with faecal diversion. | Muhammad A Javed Faryal G Afridi Dmitri Y Artioukh | 2016 | World Journal of Gastrointestinal Surgery2016,8,7: | 4 |
| 5 | Neurohumoral,cardiac and inflammatory markers in the evaluation of heart failure severity and progression显示文摘Heart failure is common in adult population,accounting for substantial morbidity and mortality worldwide.The main risk factors for heart failure are coronary artery disease,hypertension,obesity,diabetes mellitus,chronic pulmonary diseases,family history of cardiovascular diseases,cardiotoxic therapy.The main factor associated with poor outcome of these patients is constant progression of heart failure.In the current review we present evidence on the role of established and candidate neurohumoral biomarkers for heart failure progression management and diagnostics.A growing number of biomarkers have been proposed as potentially useful in heart failure patients,but not one of them still resembles the characteristics of the'ideal biomarker.'A single marker will hardly perform well for screening,diagnostic,prognostic,and therapeutic management purposes.Moreover,the pathophysiological and clinical significance of biomarkers may depend on the presentation,stage,and severity of the disease.The authors cover main classification of heart failure phenotypes,based on the measurement of left ventricular ejection fraction,including heart failure with preserved ejection fraction,heart failure with reduced ejection fraction,and the recently proposed category heart failure with mid-range ejection fraction.One could envisage specific sets of biomarker with different performances in heart failure progression with different left ventricular ejection fraction especially as concerns prediction of the future course of the disease and of left ventricular adverse/reverse remodeling.This article is intended to provide an overview of basic and additional mechanisms of heart failure progression will contribute to a more comprehensive knowledge of the disease pathogenesis. | Ekaterina A Polyakova Evgeny N Mikhaylov Dmitry L Sonin Yuri V Cheburkin Mikhail M Galagudza | 2021 | Journal of Geriatric Cardiology2021,18,1: | 4 |
| 6 | Genes associated with testicular germ cell tumors and testicular dysgenesis in patients with testicular microlithiasis显示文摘阴囊的 microlithiasis (TM ) 是阴囊的 dysgenesis 症候群(TDS ) 的症状之一。TM 作为阴囊的细菌房间肿瘤(TGCT ) 的一个增进知识的标记特别地有趣。工具包 ligand 基因( KITLG ), BCL2 对手/杀手 1 ( BAK1 ),并且表明对手 4 的 sprouty RTK ( SPRY4 ),基因与 TGCT 的高风险被联系骨头形态基因的蛋白质 7 基因( BMP7 ),转变生长因素贝它受体 3 基因( TGFBR3 ),并且 homeobox D 簇基因( HOXD )与 TDS 有关。使用的聚合酶链反应限制碎片长度多型性( PCR-RFLP )分析,我们为 KITLG 调查了等位基因和遗传型频率( rs995030 , rs1508595 ), SPRY4 ( rs4624820 , rs6897876 ), BAK1 ( rs210138 ), BMP7 ( rs388286 ), TGFBR3 ( rs12082710 ),并且在 142 个 TGCT 病人, 137 个 TM 病人,和 153 个肥沃的人(控制组)的 HOXD ( rs17198432 )。我们在 TM 在 KITLG GG_rs995030 遗传型发现了重要差别(P = 0.01 ) 并且 TGCT 病人(P = 0.0005 ) 与控制相比。我们也揭示了在 KITLG_rs1508595 和 TM 之间的强壮的协会(G 等位基因, P = 0.003;GG 遗传型, P = 0.01 ) 并且在 KITLG_rs1508595 和 TGCT 之间(G 等位基因, P = 0.0001;GG 遗传型, P = 0.0007 ) 。而且,在在 TGCT 组和控制之间的 BMP7_rs388286 有重要差别(T 等位基因, P = 0.00004;TT 遗传型, P = 0.00006 ) 并且在 TM 组和控制之间(T 等位基因, P = 0.04 ) 。HOXD 也与 TGCT 表明了一个强壮的协会(rs17198432 A 等位基因, P = 0.0001;AA 遗传型, P = 0.001 ) 。而且,重要差别在 BAK1_rs210138 G 等位基因在 TGCT 组和控制之间被发现(P = 0.03 ) 并且 GG 遗传型(P = 0.01 ) 。KITLG 和 BMP7 基因,与 TGCT 的发展联系了,可能也与 TM 有关。在摘要, KITLG GG_rs995030, GG_rs1508595, BMP7 TT_rs388286, HOXD AA_rs17198432,和 BAK1 GG_rs210138,遗传型与 TGCT 开发的高风险被联系。 | Ilya S Dantsev Evgeniy V Ivkin Aleksey A Tryakin Dmitriy N Godlevski Oleg Yu Latyshev Victoriya V Rudenko Dmitry S Mikhaylenko Vyacheslav B Chernykh Elena A Volodko Aleksey B Okulov Oleg B Loran Marina V Nemtsova | 2018 | Asian Journal of Andrology2018,20,6: | 4 |
| 7 | Value of two-phase dynamic multidetector computed tomography in differential diagnosis of post-inflammatory strictures from esophageal cancer显示文摘AIM: To characterize the computed tomography(CT) findings in patients with post-inflammatory esophageal strictures(corrosive and peptic) and reveal the optimal scanning phase protocols for distinguishing postinflammatory esophageal stricture and esophageal cancer.METHODS: Sixty-five patients with esophageal strictures of different etiology were included in this study: 24 patients with 27 histopathologically confirmed corrosive strictures, 10 patients with 12 peptic strictures and 31 patients with esophageal cancer were evaluated with a two-phase dynamic contrast-enhanced MDCT. Arterial and venous phases at 10 and 35 s after the attenuation of 200 HU were obtained at the descending aorta, with a delayed phase at 6-8 min after the start of injection of contrast media. For qualitative analysis, CT scans of benign strictures were reviewed for the presence/absence of the following features: 'target sign', luminal mass, homogeneity of contrast medium uptake, concentric wall thickening, conically shapedsuprastenotic dilatation, smooth boundaries of stenosis and smooth mucous membrane at the transition to stenosis, which were compared with a control group of 31 patients who had esophageal cancer. The quantitative analysis included densitometric parameter acquisition using regions-of-interest measurement of the zone of stenosis and normal esophageal wall and the difference between those measurements(ΔCT) at all phases of bolus contrast enhancement. Esophageal wall thickening, length of esophageal wall thickening and size of the regional lymph nodes were also evaluated. RESULTS: The presence of a concentric esophageal wall, conically shaped suprastenotic dilatation, smooth upper and lower boundaries, 'target sign' and smooth mucous membrane at the transition to stenosis were suggestive of a benign cause, with sensitivities of 92.31%, 87.17%, 94.87%, 76.92% and 82.05%, respectively, and specificities of 70.96%, 89.66%, 80.65%, 96.77% and 93.55%, respectively. The features that were most suggestive of a malignant cause were eccentric esophageal wall thickening, tuberous upper and lower boundaries of stenosis, absence of mucous membrane visualization, rupture of the mucous membrane at the upper boundary of stenosis, cup-shaped suprastenotic dilatation, luminal mass and enlarged regional lymph nodes with specificities of 92.31% 94.87%, 67.86%, 100%, 97.44%, 94.87% and 82.86%, respectively and sensitivities of 70.97%, 80.65%, 96.77%, 80.65%, 54.84%, 87.10% and 60%, respectively. The highest tumor attenuation occurred in the arterial phase(mean attenuation 74.13 ± 17.42 HU), and the mean attenuation difference between the tumor and the normal esophageal wall(mean ΔCT) in the arterial phase was 23.86 ± 19.31 HU. Here, 11.5 HU of ΔCT in the arterial phase was the cut-off value used to differentiate esophageal cancer from post-inflammatory stricture(P = 0.000). The highest attenuation of postinflammatory strictures occurred in the delayed phase(mean attenuation 71.66 ± 14.28 HU), and the mean ΔCT in delayed phase was 34.03 ± 15.94 HU. Here, 18.5 HU of ΔCT in delayed phase was the cut-off value used to differentiate post-inflammatory stricture from esophageal cancer(P < 0.0001).CONCLUSION: The described imaging findings reveal high diagnostic significance in the differentiation of benign strictures from esophageal cancer. | Grigory G Karmazanovsky Svetlana A Buryakina Evgeny V Kondratiev Qin Yang Dmitry V Ruchkin Dmitry V Kalinin | 2015 | World Journal of Gastroenterology2015,21,29: | 3 |
| 8 | Molecular pathways of liver regeneration:A comprehensive review显示文摘The liver is a unique parenchymal organ with a regenerative capacity allowing it to restore up to 70%of its volume.Although knowledge of this phenomenon dates back to Greek mythology(the story of Prometheus),many aspects of liver regeneration are still not understood.A variety of different factors,including inflammatory cytokines,growth factors,and bile acids,promote liver regeneration and control the final size of the organ during typical regeneration,which is performed by mature hepatocytes,and during alternative regeneration,which is performed by recently identified resident stem cells called“hepatic progenitor cells”.Hepatic progenitor cells drive liver regeneration when hepatocytes are unable to restore the liver mass,such as in cases of chronic injury or excessive acute injury.In liver maintenance,the body mass ratio is essential for homeostasis because the liver has numerous functions;therefore,a greater understanding of this process will lead to better control of liver injuries,improved transplantation of small grafts and the discovery of new methods for the treatment of liver diseases.The current review sheds light on the key molecular pathways and cells involved in typical and progenitor-dependent liver mass regeneration after various acute or chronic injuries.Subsequent studies and a better understanding of liver regeneration will lead to the development of new therapeutic methods for liver diseases. | Yana V Kiseleva Sevak Z Antonyan Tatyana S Zharikova Kirill A Tupikin Dmitry V Kalinin Yuri O Zharikov | 2021 | World Journal of Hepatology2021,13,3: | 2 |
| 9 | Leucine-rich repeat-containing G protein-coupled receptor 5 marks different cancer stem cell compartments in human Caco-2 and LoVo colon cancer lines显示文摘BACKGROUND Colon cancer cell lines are widely used for research and for the screening of drugs that specifically target the stem cell compartment of colon cancers.It was reported that colon cancer carcinoma specimens contain a subset of leucine-rich repeatcontaining G protein-coupled receptor 5(LGR5)-expressing stem cells,these socalled“tumour-initiating”cells,reminiscent in their properties of the normal intestinal stem cells(ISCs),may explain the apparent heterogeneity of colon cancer cell lines.Also,colon cancer is initiated by aberrant Wnt signaling in ISCs known to express high levels of LGR5.Furthermore,in vivo reports demonstrate the clonal expansion of intestinal adenomas from a single LGR5-expressing cell.AIM To investigate whether colon cancer cell lines contain cancer stem cells and to characterize these putative cancer stem cells.METHODS A portable fluorescent reporter construct based on a conserved fragment of the LGR5 promoter was used to isolate the cell compartments expressing different levels of LGR5 in two widely used colon cancer cell lines(Caco-2 and LoVo).These cells were then characterized according to their proliferation capacity,gene expression signatures of ISC markers,and their tumorigenic properties in vivo and in vitro.RESULTS The data revealed that the LGR5 reporter can be used to identify and isolate a classical intestinal crypt stem cell-like population from the Caco-2,but not from the LoVo,cell lines,in which the cancer stem cell population is more akin to B lymphoma Moloney murine leukemia virus insertion region 1 homolog(+4 crypt)stem cells.This sub-population within Caco-2 cells exhibits an intestinal cancer stem cell gene expression signature and can both self-renew and generate differentiated LGR5 negative progeny.Our data also show that cells expressing high levels of LGR5/enhanced yellow fluorescent protein(EYFP)from this cell line exhibit tumorigenic-like properties in vivo and in vitro.In contrast,cell compartments of LoVo that are expressing high levels of LGR5/EYFP did not show these stem cell-like properties.Thus,cells that exhibit high levels of LGR5/EYFP expression represent the cancer stem cell compartment of Caco-2 colon cancer cells,but not LoVo cells.CONCLUSION Our findings highlight the presence of a spectrum of different ISC-like compartments in different colon cancer cell lines.Their existence is an important consideration for their screening applications and should be taken into account when interpreting drug screening data.We have generated a portable LGR5-reporter that serves as a valuable tool for the identification and isolation of different colon cancer stem cell populations in colon cancer lines. | Samah Abdulaali Alharbi Dmitry A Ovchinnikov Ernst Wolvetang | 2021 | World Journal of Gastroenterology2021,27,15: | 2 |
| 10 | Recent advances and perspectives in next generation sequencing application to the genetic research of type 2 diabetes显示文摘Type 2 diabetes(T2D)mellitus is a common complex disease that currently affects more than 400 million people worldwide and has become a global health problem.High-throughput sequencing technologies such as whole-genome and whole-exome sequencing approaches have provided numerous new insights into the molecular bases of T2D.Recent advances in the application of sequencing technologies to T2D research include,but are not limited to:(1)Fine mapping of causal rare and common genetic variants;(2)Identification of confident genelevel associations;(3)Identification of novel candidate genes by specific scoring approaches;(4)Interrogation of disease-relevant genes and pathways by transcriptional profiling and epigenome mapping techniques;and(5)Investigation of microbial community alterations in patients with T2D.In this work we review these advances in application of next-generation sequencing methods for elucidation of T2D pathogenesis,as well as progress and challenges in implementation of this new knowledge about T2D genetics in diagnosis,prevention,and treatment of the disease. | Yulia A Nasykhova Yury A Barbitoff Elena A Serebryakova Dmitry S Katserov Andrey S Glotov | 2019 | World Journal of Diabetes2019,10,7: | 2 |
| 11 | Renal artery denervation suppresses intractable ventricular arrhythmia in patients with left heart thrombosis显示文摘Transcutaneous renal artery denervation (RND) has beeninitially developed for destruction of efferent nerve fireswith luminal delivery of radiofrequency or ultrasonic energyaiming blood pressure reduction in patients with refractoryhypertension. However, other positive results of RNDwere described afterwards, and they include suppression ofatrial fibrillation and ventricular tachycardia (VT) storm. | Marianna A Vander Petr A Fedotov Tamara A Lyubimtseva Maria A Bortsova Maria Yu Simikova Dmitry S Lebedev Evgeny N Mikhaylov | 2017 | Journal of Geriatric Cardiology2017,14,9: | 2 |
| 12 | A study of glassformation, formation of the supercooled liquid and devitrification behavior of Ni-based bulk glass-forming alloys显示文摘 | Dmitri V L-L Shimada T Inoue A | 2007 | Materials Science and Engineering A2007,,: | 1 |
| 13 | Collagen coating promotes biocompatibility of semiconductor nanoparticles in stratified LBL films显示文摘 | Sinani Vladimir A Koktysh Dmitry S Yun B G | 2003 | Nano Lett2003,3,: | 1 |
| 14 | Solid state properties of 1,2-epoxy-3-(2-methoxyphenyloxy)-propane--valuable intermediate in non-racemie drug synthesis显示文摘 | Alexander A B Elena I S Dmitry V Z | 2005 | Tetrahedron: Asymmetry2005,16,: | 1 |
| 15 | Hybrid algorithms for digital halftoning and their application to medical imaging显示文摘 | Sandler Eugene A Gusev Dmitri A Milman Gregory Y | 1997 | IEEE Transactions on Computers&Graphics1997,21,1: | 1 |
| 16 | Substantial regional variation in substitution rates in the human genome, importance of GC gene density, and telomere - specific effects 显示文摘 | Peter F A Terence H Dmitri A P | 2005 | Journal of Molecular Evolution2005,60,: | 1 |
| 17 | GDNF promotes tubulogenesis of GFR1-expressing MDCK cells by srcmediated phosphorylation of met receptor tyrosine kinase显示文摘 | Anna P Dmitry P Elena A | 2003 | J Cell Biol2003,161,1: | 1 |
| 18 | Model validation for the August 10,1996 WSCC system outage显示文摘 | Dmitry N K Carson W T William A M | 1999 | IEEE Transactions on Power Systems1999,14,3: | 1 |
| 19 | Efficiency improvement of AlGaInN LEDs advanced by ray-tracing analysis显示文摘 | Zabelin Vasily Zakheim Dmitri A Gurevich Sergey A | 2004 | IEEE Journal Of Quantum Electronics2004,40,12: | 1 |
| 20 | Nonliththographic nano-wire arrays:fabrication, physics,and device applications显示文摘 | Dmitri R Tager A A Junji H | 1996 | IEEE Transactions on Electron Devices1996,43,10: | 1 |