Publications in 1999

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(A) Journal Papers (* Invited) and Book Chapters (**)

  1. X. B. Tian, X. F. Wang, B. Y. Tang, P. K. Chu, P. K. Ko, and Y. C. Cheng, “Special Modulator for High Frequency, Low Voltage Plasma Immersion Ion Implantation”, Review of Scientific Instruments, vol. 70, no. 3, pp. 1824 - 1828 (1999).

  2. A. G. Liu, X. F. Wang, S. Y. Wang, Z. M. Zeng, X. B. Tian, B. Y. Tang, and P. K. Chu, “Simulation of Dose Uniformity for Different Pulse Durations during Inner Surface Plasma Immersion Ion Implantation”, Journal of Vacuum Science & Technology B, vol. 17, no. 2, pp. 875 - 878 (1999).

  3. T. K. Kwok, X. C. Zeng, Q. C. Chen, P. K. Chu, and T. E. Sheridan, “Effects of Tube Length and Radius for Inner Surface Plasma Immersion Ion Implantation Using An Auxiliary Electrode”, IEEE Transactions on Plasma Science, vol. 27, no. 1, pp. 225 - 238 (1999).

  4. Z. M. Zeng, B. Y. Tang, P. K. Chu, X. B. Tian, S. Y. Wang, and X. F. Wang, “Process Window and Mechanism of Surface Property Enhancement of 9Cr18 Steel Using Plasma Immersion Ion Implantation”, Journal of Vacuum Science & Technology B, vol. 17, no. 2, pp. 851 - 854 (1999).

  5. T. K. Kwok, T. Zhang, P. K. Chu, M. M. M. Bilek, and I. G. Brown, “Computed Electron Oscillation inside a Vacuum Arc Plasma Source Duct”, Journal of Applied Physics, vol. 85, no. 9, pp. 6381 - 6384 (1999).

  6. Z. N. Fan, P. K. Chu, N. W. Cheung, and C. Chan, “Thickness Uniformity of Silicon-on-Insulator Fabricated by Plasma Immersion Ion Implantation”, IEEE Transactions on Plasma Science, vol. 27, no. 2, pp. 633 - 636 (1999).

  7. T. Zhang, B. Y. Tang, Z. M. Zeng, T. K. Kwok, P. K. Chu, O. R. Monteiro, and I. G. Brown, “Pure High Dose Metal Ion Implantation Using the Plasma Immersion Technique”, Review of Scientific Instruments, vol. 70, no. 11, pp. 4359 - 4361 (1999).

  8. X. B. Tian, Z. N. Fan, X. C. Zeng, Z. M. Zeng, B. Y. Tang, and P. K. Chu, “In-Situ Sample Temperature Measurement in Plasma Immersion Ion Implantation”, Review of Scientific Instruments, vol. 70, no. 6, pp. 2818 - 2821 (1999).

  9. T. Zhang, B. Y. Tang, Z. M. Zeng, Q. C. Chen, P. K. Chu, and I. G. Brown, “Enhancement and Stabilization of Cathodic Arc Using Mesh Anode”, IEEE Transactions on Plasma Science, vol. 27, no. 3, pp. 786 - 790 (1999).

  10. Z. M. Zeng, T. K. Kwok, X. B. Tian, B. Y. Tang, and P. K. Chu, “Investigation of Dose Uniformity on the Inner Races of Bearings Treated by Plasma Immersion Ion Implantation”, Journal of Applied Physics. vol. 86, no. 1, pp. 120 - 123 (1999).

  11. Z. N. Fan, X. Zeng, P. K. Chu, C. Chan, and M. Watanabe, “Surface Metal Contamination on Silicon Wafers after Hydrogen Plasma Immersion Ion Implantation”, Nuclear Instruments and Methods in Physics Research B, vol. 155, no. 1 - 2, pp. 75 - 78 (1999).

  12. T. Zhang, B. Y. Tang, Q. C. Chen, Z. M. Zeng, P. K. Chu, M. M. M. Bilek, and I. G. Brown, “Vacuum Arc Plasma Transport through a Magnetic Duct with a Biased Electrode at the Outer Wall”, Review of Scientific Instruments, vol. 70, no. 8, pp. 3329 - 3331 (1999).

  13. Z. M. Zeng, T. Zhang, B. Y. Tang, X. B. Tian, and P. K. Chu, “Improvement of Tribological Properties of 9Cr18 Bearing Steel Using Metal and Nitrogen Plasma Immersion Ion Implantation”, Surface and Coatings Technology, vol. 115, pp. 234 - 238 (1999).

  14. M. Zhang, X. C. Zeng, P. K. Chu, R. Scholz, and C. L. Lin, “Gettering of Cu by Microcavities in Bonded / Ion-Cut Silicon-on-Insulator (SOI) and Separation by Implantation of Oxygen (SIMOX)”, Journal of Applied Physics, vol. 86, no. 8, pp. 4214 - 4219 (1999).

  15. D. T. K. Kwok, P. K. Chu, B. P. Wood, and C. Chan, “Particle-in-Cell and Monte-Carlo Simulation of the Hydrogen Plasma Immersion Ion Implantation Process”, Journal of Applied Physics, vol. 86, no. 4, pp. 1817 - 1821 (1999).

  16. Z. M. Zeng, X. B. Tian, D. T. K. Kwok, B. Y. Tang, and P. K. Chu, “Influence of Sample Placement on the Dose Uniformity in Plasma Immersion Ion Implantation of Industrial Ball Bearings”, IEEE Transactions on Plasma Science, vol. 27, no. 4, pp. 1203 - 1209 (1999).

  17. T. Zhang, Z. M. Zeng, X. B. Tian, B. Y. Tang, P. K. Chu, I. G. Brown, and H. X. Zhang, “Mechanism of Enhanced Plasma Transport of Vacuum Arc Plasma through Curved Magnetic Ducts”, Journal of Vacuum Science and Technology A, vol. 17, no. 5, pp. 3074 - 3076 (1999).

  18. Z. M. Zeng, B. Y. Tang, X. F. Wang, S. Y. Wang, and P. K. Chu, “Surface Modification Process and Mechanism of 9Cr18 Bearing Steel Using Nitrogen Plasma Immersion Ion Implantation”, Material Science and Technology, vol. 7, no. 3, pp. 26 - 29 (1999).

  19. X. B. Tian, B. Y. Tang, and P. K. Chu, “Accurate Determination of Pulsed Current Waveform in Plasma Immersion Ion Implantation Processes”, Journal of Applied Physics, vol. 86, no. 7, pp. 3567 - 3570 (1999).

  20. Z. M. Zeng, T. Zhang, B. Y. Tang, X. B. Tian, and P. K. Chu, “Surface Modification of Steel by Metal Plasma Immersion Ion Implantation Using Vacuum Arc Plasma Source”, Surface and Coatings Technology, vol. 120 -121, pp. 659 - 662 (1999).

  21. X. B. Tian, T. Zhang, Z. M. Zeng, B. Y. Tang, and P. K. Chu, “Dynamic Mixing Deposition / Implantation in a Plasma Immersion Configuration”, Journal of Vacuum Science & Technology A, vol. 17, no, 6, pp. 3255 - 3259 (1999).

  22. P. K. Chu, S. B. Felch, P. Kellerman, F. Sinclair, L. A. Larson, and B. Mizuno, “Plasma Doping: Progress and Potential (Part 1)”, Solid State Technology, vol. 42, no. 9, pp. 55 - 60 (1999).

  23. P. K. Chu, S. B. Felch, P. Kellerman, F. Sinclair, L. A. Larson, and B. Mizuno, “Plasma Doping: Progress and Potential (Part 2)”, Solid State Technology, vol. 42, no. 10, pp. 77 - 82 (1999).

  24. X. B. Tian, B. Y. Tang, X. F. Wang, and P. K. Chu, “Low Temperature Plasma Nitriding Under High Frequency and High Voltage for Austenitic Stainless Steel”, Metal Heat Treatment, vol. 8, pp. 13 - 15 (1999).

  25. N. Huang, P. Yang, Y. X. Leng, J. Y. Chen, H. Sun, T. F. Xi, W. H. Tian, W. K. Ma, X. Wu, F. Chen, P. K. Chu, and B. Y. Tang, “Synthesized and Blood Compatibility Study of Doped Titanium Oxide Films”, Chinese Science Abstracts, vol. 5, no. 6, pp. 728 - 730 (1999).

  26. Z. M. Zeng, T. K. Kwok, X. B. Tian, B. Y. Tang, and P, K. Chu, “Plasma Immersion Ion Implantation into Inner and Outer Races of Industrial Bearings”, Surface and Coatings Technology, vol. 120 - 121, pp. 663 - 667 (1999).

  27. N. Huang, P. Yang, Y. X. Leng, J. Y. Chen, H. Sun, T. F. Xi, W. H. Tian, X. Wu, W. K. Ma, F. Chan, P. K. Chu, and B. Y. Tang, “The Evolution of Artificial Heart Valve Surface Modification”, Bulletin of National Natural Science Foundation of China, vol. 6, pp. 331 - 334 (1999).

  28. B. Y. Tang, S. Y. Wang, A. G. Liu, Z. M. Zeng, X. B. Tian, X. F. Wang, L. P. Wang, and P. K. Chu, “Development of Plasma Immersion Ion Implantation and Surface Strengthening Technique”, Material Science and Technology, vol. 7S, pp. 181 - 192 (1999).

  29. X. B. Tian, B. Y. Tang, S. Q. Yang, and P. K. Chu, “Adhesion Damage and PIII Strengthening of Interfaces of Acoustic System in an Ultrasonic Plastic Welder”, Hanjie Xuebao, vol. 20, no. 4, pp. 233 - 237 (1999).

  30. R. Gunzel, S. Mandl, E. Richter, A. Liu, B. Y. Tang, and P. K. Chu, “Corrosion Protection of Titanium by deposition of Niobium Thin Films”, Surface & Coatings Technology, vol. 116 - 119, pp. 1107 - 1110 (1999).

  31. J. Min, P. K. Chu, X. Lu, S. S. K. Iyer, and N. W. Cheung, “Impurity Gettering Effects of Helium Implantation-Induced Cavities in Silicon”, Chinese Journal of Semiconductors, vol. 20, no. 6. pp. 448 - 451 (1999).

(B) Conference Papers (* Invited)

  1. T. K. Kwok, P. K. Chu, and C. Chan, “Two Dimensional Particle-in-Cell Simulation of Plasma Immersion Ion Implantation into Planar Wafer”, Proceedings 12th Symposium on Applications of Plasma Processes, Liptovsky Jan, Slovakia, pp. 192 - 193, Feb 9 - 13, 1999.

  2. T. K. Kwok, P. K. Chu, and T. E. Sheridan, “Two Dimensional Particle-in-Cell Simulation of Plasma Immersion Ion Implantation into the Inner Surface of a Bore Using an Auxiliary Electrode”, Proceedings 12th Symposium on Applications of Plasma Processes, Liptovsky Jan, Slovakia, pp. 196 - 197, Feb 9 - 13, 1999.

  3. T. K. Kwok, Z. M. Zeng, X. B. Tian, B. Y. Tang, P. K. Chu, and T. E. Sheridan, “Two Dimensional Particle-in-Cell Simulation of Plasma Immersion Ion Implantation into Ring Shape Target”, Proceedings 12th Symposium on Applications of Plasma Processes, Liptovsky Jan, Slovakia, pp. 194 - 195, Feb 9 - 13, 1999.

  4. X. B. Tian, X. F. Wang, S. Y. Wang, B. Y. Tang, and P. K. Chu, “Surface Modification of Metals Using High-Frequency, Low-Voltage Plasma Immersion Ion Implantation (HLPIII)”, Proceedings Surface Engineering: Science and Technology 1, Minerals, Metals, and Materials Society (TMS) Annual Meeting, A. Kumar, Y. W. Chung, J. J. Moore, and J. E. Smugeresky (Eds.), San Diego, California, pp. 177 - 184, Feb 28 - Mar 4, 1999.

  5. W. S. Lau, M. T. Chaudima Perera, T. Han, N. P. Sandler, C. H. Tung, T. T. Sheng, P. K. Chu, and T. C. Chong, “Two Step O2 / N2O Plasma Annealing for the Reduction of Leakage Current in Amorphous Ta2O5 Films”, Proceedings Symposium R: Ultrathin SiO2 and High-k Materials for ULSI Gate Dielectrics, MRS Spring Meeting, San Francisco, California, vol. 567, pp. 501 - 507, April 5 - 9, 1999.

  6. Z. M. Zeng, T. Zhang, B. Y. Tang, X. B. Tian, and P. K. Chu, “Improvement of Tribological Properties of 9Cr18 Bearing Steel Using Metal and Nitrogen Plasma Immersion Ion Implantation”, Proceedings 26th International Conference on Metallurgical Coatings and Thin Films (ICMCTF 99), San Diego, California, Paper, EP-20, p. 82, Apr 12 - 15, 1999.

  7. Z. M. Zeng, T. K. Kwok, B. Y. Tang, X. B. Tian, and P. K. Chu, “Investigation of Dose Uniformity in Industrial Parts with Interior and Exterior Races and Grooves Treated by Plasma Immersion Ion Implantation”, Proceedings 26th International Conference on Metallurgical Coatings and Thin Films (ICMCTF 99), San Diego, California, Paper EP-21, p. 82, Apr 12 - 15, 1999.

  8. * P. K. Chu, “Surface Property Enhancement by Plasma Treatment”, Proceedings Asia Industrial Technology Congress (AITC '99), Hong Kong, Paper MT-A9-2, p. 6, Apr 26 - 29, 1999.

  9. * P. K. Chu, “Industrial Applications of Plasma Immersion Ion Implantation”, Proceedings 4th Annual Conference of the Physical Society of Hong Kong, Hong Kong, Plenary Session Paper C-1, p. 5, Jun 12, 1999.  [Plenary Talk]

  10. X. B. Tian, Z. M. Zeng, B. Y. Tang, and P. K. Chu, “High Frequency, Low Voltage Plasma Immersion Ion Implantation of SS304 Stainless Steel”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Abstract Book #2, Paper W42, p. 221, Jun 13 - 18, 1999.

  11. P. K. Chu and X. B. Tian, “Elevated Temperature Plasma Immersion Ion Implantation”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Abstract Book #2, Paper W40, p. 220, Jun 13 - 18, 1999.

  12. X. B. Tian, T. Zhang, and P. K. Chu, “Co-Implantation of Titanium and Nitrogen for Surface Modification of Austenitic Stainless Steel Using Plasma Immersion Ion Implantation”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Abstract Book #2, Paper W43, pp. 221 - 222, Jun 13 - 18, 1999.

  13. X. B. Tian, T. K. Kwok, X. C. Zeng, and P. K. Chu, “Target Temperature Simulation during Plasma Immersion Ion Implantation”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Abstract Book #2, Paper W41, p. 221, Jun 13 - 18, 1999.

  14. M. Zhang, X. C. Zeng, R. Scholz, C. L. Lin, and P. K. Chu, “Gettering of Cu by Microcavities in Helium and Hydrogen Implanted Silicon-on-Insulator (SOI)”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Abstract Book #2, Paper W65, p. 232, Jun 13 - 18, 1999.

  15. N. Huang. P. Yang, Y. X. Leng, J. Y. Chen, H. Sun, T. F. Xi, W. K. Ma, B. Y. Tang, and P. K. Chu, “A Development of Surface Modification of Artificial Heart Valve Materials”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Paper S82, Jun 13 - 18, 1999.

  16. J. Y. Chen, N. Huang, P. Yang, Y. X. Leng, H. Sun, W. K. Ma, F. Chen, T. F. Xi, W. H. Tian, B. Y. Tang, and P. K. Chu, “Blood Compatibility of Ta5+ doped TiO2 Film Synthesized by Sputtering Deposition”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Paper S7, Jun 13 - 18, 1999.

  17. L. M. Lam, A. H. P. Ho, K. S. Chan, P. K. Chu, and E. Y. B. Pun, “Dosage and Drain Effects on Diffusion Induced Disorder in InGaAsP MQW Structures due to Plasma Immersion Ion Implantation of Argon”, 5th IUMRS International Conference on Advanced Materials (IUMRS-ICAM'99), Beijing, China, Abstract Book #1, Paper N8, p. 595, Jun 13 - 18, 1999.

  18. D. T. K. Kwok, P. K. Chu, B. P. Wood, and C. Chan, “Particle-in-Cell and TAMIX Simulation of the Hydrogen Plasma Immersion Ion Implantation Ion-Cut Process”, Proceedings 26th IEEE International Conference on Plasma Science (ICOPS99), Monterey, California, Paper 3D07, p. 159, Jun 20 - 24, 1999.

  19. T. K. Kwok, T. Zhang, P. K. Chu, M. M. M. Bilek, and I. G. Brown, “Particle-in-Cell Modeling of Electron Oscillation inside a Vacuum Arc Plasma Source Duct”, Proceedings 26th IEEE International Conference on Plasma Science (ICOPS99), Monterey, California, Paper 6P09, p. 269, Jun 20 - 24, 1999.

  20. X. B. Tian, Z. M. Zeng, T. K. Kwok, B. Y. Tang, and P. K. Chu, “High Voltage Ionization during Plasma Immersion Ion Implantation”, Proceedings 26th IEEE International Conference on Plasma Science (ICOPS99), Monterey, California, Paper 4P15, p. 205, Jun 20 - 24, 1999.

  21. Z. M. Zeng, X. B. Tian, T. K. Kwok, B. Y. Tang, and P. K. Chu, “Influence of Sample Placement on Dose Uniformity in Plasma Immersion Ion Implantation of Industrial Bearings”, Proceedings 26th IEEE International Conference on Plasma Science (ICOPS99), Monterey, California, Paper 4P16, p. 205, Jun 20 - 24, 1999.

  22. P. K. Chu and L. Wang, “Determination of Surface Hydrogen in Plasma Immersion Implanted Silicon”, Proceedings 12th International Conference on Secondary Ion Mass Spectrometry (SIMS XII), A. Benninghoven, P. Bertrand, H. - J. Bertrand, and H. W. Werner (Eds.), Brussels, Belgium, pp. 669 - 672, Sep 5 - 10, 1999.

  23. P. K. Chu, S. Mitha, and S. P. Smith, “High Accuracy SIMS Dopant Profiling in Heterojunction SiGe/Si Structures”, Proceedings 12th International Conference on Secondary Ion Mass Spectrometry (SIMS XII), A. Benninghoven, P. Bertrand, H. - J. Bertrand, and H. W. Werner (Eds.), Brussels, Belgium, pp. 665 - 668, Sep 5 - 10, 1999.

  24. P. K. Chu, S. Mitha, C. Huang, and J. F. Kirchhoff, “Accurate Determination of Arsenic Depth Profiles in GaAsN Films Using SIMS and RBS”, Proceedings 12th International Conference on Secondary Ion Mass Spectrometry (SIMS XII), Brussels, Belgium, Paper AA5-P-Th-12, p. 238, Sep 5 - 10, 1999.

  25. * N. Huang. P. Yang, R. Günzel, P. K. Chu, and T. F. Xi, “Surface Modification of Blood Contacting Biomaterials”, 8th International Conference on Surface Modification Technology / 13th International Conference on Processing and Fabrication of Advanced Materials, Singapore, pp. 207 - 220, September 8 - 10, 1999.

  26. R. Günzel, Z. Mändl. E. Richter, M. Soltany, X. B. Tian, Z. M. Zeng, B. Y. Tang, and P. K. Chu, “Corrosion Protection of Titanium by Deposition of Niobium Thin Films”, Proceedings 2nd Asia-European International Conference on Plasma Surface Engineering (AEPSE'99), Beijing, China, pp. 58 - 59, Sep 15 - 19, 1999.

  27. T. Zhang, B. Y. Tang, Z. M. Zeng, Q. C. Chen, X. B. Tian, T. K. Kwok, P. K. Chu, O. R. Monteiro, and I. G. Brown, “Macro-Particle Free Metal Plasma Immersion Ion Implantation and / or Deposition”, International Conference on Surface Modification of Metals by Ion Beams (SMMIB99), Beijing, China, Paper P-A-21, p. 87, Sep 19 - 24, 1999.

  28. Z. M. Zeng, T. Zhang, X. B. Tian, B. Y. Tang, T. K. Kwok, and P. K. Chu, “Surface Modification of 9Cr18 Bearing Steel by W+C and Ti+C Plasma Immersion Ion Implantation”, Proceedings International Conference on Surface Modification of Metals by Ion Beams (SMMIB99), Beijing, China, Paper P-A-22, p. 88, Sep 19 - 24, 1999.

  29. X. B. Tian, Z. M. Zeng, B. Y. Tang, T. K. Kwok, and P. K. Chu, “Fast Pulsing Plasma Immersion Ion Implantation for Tribological Applications”, Proceedings International Conference on Surface Modification of Metals by Ion Beams (SMMIB99), Beijing, China, Paper P-A-23, p. 89, Sep 19 - 24, 1999.

  30. X. B. Tian, X. F. Wang, A. G. Liu, L. P. Wang, S. Y. Wang, B. Y. Tang, and P. K. Chu, “Ion Heating During Plasma Immersion Ion Processing”, 3rd International Conference on Physical and Numerical Simulation of Materials and Hot Working (ICPNS'99), Beijing, China, Paper 1-25, Oct 10 - 14, 1999.

  31. A. G. Liu, X. F. Wang, S. Y. Wang, B. Y. Tang, and P. K. Chu, “Two-Dimensional Numerical Analysis of Plasma Immersion Ion Implantation of Cylindrical Bores”, 3rd International Conference on Physical and Numerical Simulation of Materials and Hot Working (ICPNS'99), Beijing, China, Paper 1-26, Oct 10 - 14, 1999.

  32. N. Huang, P. Yang, Y. X. Leng, J. Y. Chen, H. Sun, T. F. Xi, W. H. Tian, W. K. Ma, F. Chen, P. K. Chu, and B. Y. Tang, “Progress of Surface Modification Research of Artificial Heart Valves”, Proceedings Chinese Academy of Science & Technology (CAST) Annual Meeting, China, p. 897 (1999). 

  33. B. Z. Li, X. P. Qu, G. P. Ru, N. Wang, and P. Chu, “Process and Mechanism of CoSi2 / Si Solid Phase Epitaxy by Multilayer Reaction”, Materials Research Society Fall Meeting, Boston, Massachusetts, Paper E5.18, November 29 - December 3, 1999.

  34. Z. M. Zeng, B. Y. Tang, X. B. Tian, M. K. Fung, T. K. Kwok, and P. K. Chu, “Process Window of Formation of Amorphous Carbon Thin Films by Plasma Immersion Ion Implantation”, 5th Plasma-Based  Ion Implantation Workshop (PBII), Kyoto, Japan, Paper P-01, December 13 - 16, 1999.

  35. D. T. K. Kwok, T. Zhang, P. K. Chu, M. M. M. Bilek, I. G. Brown, and A. Vizir, “Experimental Investigation of Electron Oscillation inside the Duct of a Vacuum Arc Source”, 5th Plasma-Based  Ion Implantation Workshop (PBII), Kyoto, Japan, Paper P-02, December 13 - 16, 1999.

  36. * D. T. K. Kwok, P. K. Chu, M. Takase, and B. Mizuno, “Energy Distribution and Depth Profile of BF3 Plasma Doping into Silicon”, 5th Plasma-Based  Ion Implantation Workshop (PBII), Kyoto, Japan, Paper IT-05, December 13 - 16, 1999.

  37. X. B. Tian, B. Y. Tang, Z. M. Zeng, X. C. Zeng, and P. K. Chu, “Ion Dose and Dose Uniformity Improvement Using High Frequency, Low Voltage Plasma Immersion Ion Implantation”, 5th Plasma-Based  Ion Implantation Workshop (PBII), Kyoto, Japan, Paper P-59, December 13 - 16, 1999.

  38. A. H. P. Ho, D. T. K. Kwok, X. C. Zeng, C. Chan, and P. K. Chu, “Preparation of Gallium Nitride (GaN) and Related Compounds by Plasma Immersion Ion Implantation and Rapid Thermal Annealing”, 5th Plasma-Based  Ion Implantation Workshop (PBII), Kyoto, Japan, Paper P-58, December 13 - 16, 1999.


Publications in 1982-1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034, 2035