Systems & Control Labs College Department B C Chang

List of Publications _ BC Chang

  1. Chirag Jagadish and B.C. Chang, "Diversified Redundancy in the Measurement of Euler Angles Using Accelerometers and Magnetometers," To appear on Proceedings of the 46th IEEE Conference on Decision and Control , December 12-14, 2007, New Orleans, LA.

  2. Mark Ilg and B. C. Chang, "Design and Implementation of a Digital Controller for An Infrasonic Speaker System," To appear on Proceedings of the 2007 IEEE international Conference on Control Applications, October 1-3, 2007, Singapore.

  3. B. Dumitrescue and B. C. Chang, "Robust Schur Stability with Polynomial Parameters," IEEE Transactions on Circuits and Systems – II: Vol. 53, No. 7, pp. 535-537, July 2006.

  4. H. G. Kwatny and B. C. Chang, “Symbolic Computing of Nonlinear Observable and Observer Forms,” Applied mathematics and Computation, Vol 171, December 2005, pp. 1058-1050.

  5. Suba Thomas, Harry G. Kwatny, and Bor-Chin Chang, Bifurcation-Induced Limits of a Controller-Reconfigured F-16 Subject To Actuator Failures,” Proceedings on the 2005 IEEE Conference on Control Applications, August 29-31, 2005. Page(s):  165- 170.

  6. Suba Thomas, Harry Kwatny, Bor-Chin Chang, and Christine Belcastro, “Regulator Design For Control Surface Failure Accommodation In An F-16,” Proceedings of 2005 AIAA Guidance, Navigation, and Control Conference, August 15-18, 2005. Paper No. AIAA 2005-5939.

  7. Bor-Chin Chang, Harry Kwatny, Suba Thomas, Gaurav Bajpai, Daniel Chunlong Hu, and Christine Belcastro, “Reconfigurable Control Of Aircraft In Nonlinear Flight Regimes,”  Proceedings of 2005 AIAA Guidance, Navigation, and Control Conference, August 15-18, 2005. Paper No. AIAA 2005-6167.

  8. Christine M. Belcastro, Thuan H. Khong, Jong-Yeob Shin, Harry Kwatny, Bor-Chin Chang, and Gary J. Balas, Uncertainty Modeling for Robustness Analysis of Aircraft Control Upset Prevention and Recovery Systems,” Proceedings of 2005 AIAA Guidance, Navigation, and Control Conference, August 15-18, 2005. Paper No. AIAA 2005-6427.

  9. Suba Thomas, Gaurav Bajpai, Harry G. Kwatny, and Bor-Chin Chang, “Nonlinear Dynamics, Stability & Bifurcation in Aircraft: Simulation and Analysis Tools,” Proceedings of 2005 AIAA Guidance, Navigation, and Control Conference, August 15-18, 2005. Paper No. AIAA 2005-6428.

  10. Mark Ilg, B. C. Chang, David Hepner, and Andrew Thompson, “ A Microcontroller Solution for AMR Magnetic Sensing in Flying Munitions Systems,” Proceeding of the 2005 IEEE International Conference on Mechatronics. July 10-12, 2005.

  11. Fang-Cheng Chu and  B. C. Chang, “ Automatic Visual Tracking Control System Using Embedded Computers,” Proceeding of the 2005 IEEE International Conference on Mechatronics. July 10-12, 2005.

  12. Daniel Chunlong Hu and B. C. Chang, “Multivariable Controller Design for Hard Drive Dual-stage Actuator Servo Systems,” Proceeding of the 2005 IEEE International Conference on Mechatronics. July 10-12, 2005.

  13. B.C. Chang, Chunlong Hu,  and Mark Ilg, “Design And DSP Microprocessor Implementation Of Digital Sinusoidal Tracking Controllers, Proceedings of the 2005 American Control Conference. June 8-10, 2005 Page(s): 4947 - 4952.

  14. Chunlong Hu and B.C. Chang, "Discrete-time Cooperative Control of a Faulty Mechanical System," Proceedings of the 2004 IEEE International Conference on Control Applications, Taipei, Taiwan, September 2004, Page(s): 26 -31.  

  15. Suba Thomas, Harry Kwatny, B.C. Chang, "Nonlinear Reconfiguration for Asymmetric Failures in a Six Degree-of-Freedom F-16," Proceedings of the 2004 American Control Conference, Boston, Massachusetts, June, 2004, Page(s): 1823 – 1828.

  16. B.C. Chang and Chunlong Hu, "Multivariable Control and Failure \Accommodation in Eye-Head-Torso Target Tracking," Proceedings of the 42nd IEEE Conference on Decision and Control, Maui, Hawaii, Dec. 2003, Page(s): 978 -983.     PDF

  17. Shr-Shiung Hu, Pao-Hwa Yang, and B.C. Chang, "A Computational Issue and Modified Formulas for Nonlinear Dissipative Controllers," The ASME Journal of Dynamic Systems, Measurement, and Control, September 2003, Page(s): 475 – 480.

  18. H. G. Kwatny, S. P. Wang and B. C. Chang, "Static Bifurcation in Mechanical Control Systems,"  Chaos and Bifurcation Control: Theory and Applications, G. Chen, Ed.: Springer-Verlag, August, 2003.     PDF

  19. Shr-Shiung Hu, Pao-Hwa Yang, J.Y. Juang, and B.C. Chang, " Robust Nonlinear Ship Course-Keeping Control by H-infinity I/O Linearization and Mu-synthesis,International Journal of Robust and Nonlinear Control, January 2003, Vol. 13, Page(s): 55-70. 

  20. Suba Thomas, B.C. Chang, Harry Kwatny, "Reconfigurable Control Of Aircraft With Partial Elevator Failure," Proceedings of the AIAA Guidance, Navigation, and Control Conference, Austin, Texas, August 11 – 14, 2003.

  21. Suba Thomas, Harry Kwatny, B.C. Chang, "Lie Transform Construction Of Exponential Normal Form Observers, " Proceedings of the 4th IFAC Symposium on Robust Control Design, Milan, Italy, June 25-27, 2003.     PDF

  22. Suba Thomas, B.C. Chang, Harry Kwatny, "Controller Reconfiguration for Nonlinear Systems using Composite Observer," Proceedings of the 2003 American Control Conference, Denver, Colorado, June 4-6, 2003, Page(s): 4779 -4784.     pdf

  23. Pao-Hwa Yang, Shr-Shiung Hu, and B.C. Chang,  "Nonlinear and Linear H-infinity Control by Energy Dissipation Approach," The Journal of the Chinese Institute of Electrical Engineering, Volume: 9,  Issue: 3, August 2002, Page(s): 231 -241

  24. G. Bajpai, B.C. Chang, H.G. Kwatny, "Design of fault-tolerant systems for actuator failures in nonlinear systems, "  Proceedings of the 2002 American Control Conference, Volume: 5 , May 2002, Page(s): 3618 -3623.

  25. C.M. Belcastro, B.-C. Chang, "Uncertainty modeling for robustness analysis of failure detection and accommodation systems," Proceedings of the 2002 American Control Conference, Volume: 6 , May 2002, Page(s): 4776 -4782.

  26. H.G. Kwatny, Bor-Chin Chang,  " Observer design tools for nonlinear flight regimes, " Proceedings of the 2002 American Control Conference, Volume: 5 , May 2002, Page(s): 4203 -4208.

  27. B.C. Chang, G. Bajpai, H.G. Kwatny, "A regulator design to address actuator failures," Proceedings of the 40th IEEE Conference on Decision and Control, Volume: 2 , Dec. 2001, Page(s): 1454 -1459.

  28. G. Bajpai, B.C. Chang, "Control of longitudinal dynamics of the aircraft with elevator failure, " Proceedings of the 20th Digital Avionics Systems Conference, Volume: 2 , Oct. 2001,  Page(s): 9A4/1 -9A4/6 vol.2.

  29. G. Bajpai, B.C. Chang, A. Lau, "Reconfiguration of flight control systems for actuator failures, "  IEEE Aerospace and Electronics Systems Magazine , Volume: 16 Issue: 9 , Sept. 2001,  Page(s): 29 -33

  30. B.C. Chang, Gaurav Bajpai, and Harry G. Kwatny, "A Regulator Design to Address Actuator Failures," Proceedings of the 40th IEEE Conference on Decision and Control, Orlando, Florida, Dec. 2001.

  31. Gaurav Bajpai and B.C. Chang, "Control of Longitudinal Dynamics of the Aircraft with Elevator Failure," Proceedings of the 20th Digital Avionics Systems Conference, Daytona Beach, Florida, Oct. 2001.

  32. Gaurav Bajpai, B.C. Chang, and A. Lau, "Reconfiguration of Flight Control Systems for Actuator Failures," IEEE Aerospace and Electronics Systems Magazine, Volume: 16 Issue: 9, pp. 29-33, Sept. 2001.

  33. Gaurav Bajpai and B.C. Chang, "Decoupling of Failed Actuators in Flight Control Systems," Proceedings of the 2001 American Control Conference, Vol. 3, pp.1836-1840, June 2001.

  34. Shr-Shiung Hu, B.C. Chang, H. H. Yeh, and H. G. Kwatny, "Robust Nonlinear Controller Design for a Longitudinal Flight Control Problem, " The Asian Journal of Control, Vol. 2, No. 2, pp. 111-121, June 2000.

  35. Gaurav Bajpai, B.C. Chang, and Alan Lau, "Reconfiguration of Flight Control Systems for Actuator Failures," Proceedings of the 19th Digital Avionics Systems Conference, Vol.1, pp. 3C6/1 -3C6/6, Philadelphia, Oct. 2000.

  36. Jengyih Juang and B.C. Chang, "Robust Control Theory Applied to Ship Maneuvering," Proceedings of the 38th IEEE Conference on Decision and Control, Vol.3, pp. 2186 –2191, Phoenix, Arizona, Dec. 1999.

  37. Gaurav Bajpai, B.C. Chang, and Alan Lau, "Control Laws with Hierarchical Switch Logic to Accommodate EME-Induced Sensor Failures," Proceedings of the 18th Digital Avionics Systems Conference, Vol. 2, pp. 10.C.3-1 -10.C.3-4, St Louis, Oct. 1999.

  38.  Jon Suh, Gaurav Bajpai, and B.C. Chang, “A Virtual Closed-loop Remedy for Temporary Sensor Failures,” Proceedings of the 1999 IEEE International Conference on Control Applications, Kohala, Hawaii, pp. 1515-1518, August, 1999.

  39. S.S. Hu, B.C. Chang, H.H. Yeh, and H.G. Kwatny, “Nonlinear Robust Controller Design Based on H-infinity and Mu-synthesis,” Proceedings of the 14th IFAC Triennial World Congress, Beijing, pp.423-428, July, 1999.

  40. S.S. Hu, P.H. Yang, and B.C. Chang, “A Successive Algorithm for Solving the Hamilton Jacobi Equations,” Proceedings of the 1999 American Control Conference, San Diego, pp.2842-2846, June, 1999.

  41. Gaurav Bajpai and B.C. Chang, “Observer-based Variable Structure Control of Inverted Pendulum System,” Proceedings of the 5th International Workshop on Variable Structure Systems, Longboat Key, Florida, December, 1998.

  42. S.S. Hu, P.H. Yang, and B.C. Chang, "Modified Nonlinear H-infinity Controller Formulas and H-infinity I/O Linearization Problem," Proceedings of the 37th IEEE Conference on Decision and Control, Tampa, Florida, December, 1998.

  43. D. Malloy and B.C. Chang, “Stabilizing Controller Design for Linear Parameter Varying Systems Using Parameter Feedback,” AIAA Journal of Guidance, Control and Dynamics, Vol. 21, No. 6, pp. 891-898, Nov-Dec 1998.

  44. H. G. Kwatny and B.C. Chang, “Constructing Linear families From Parameter-Dependent Nonlinear Dynamics,” IEEE Transactions on Automatic Control, Vol. AC-43, No.8, pp.1143-1147, August 1998. 

  45. D. Malloy and B.C. Chang, “Flight Control Law Design Using Dynamic Inversion for Linear Parameter Varying Systems,”  ASME Journal of Dynamic Systems, Measurement and Control, Vol. 120, pp.200-207, June, 1998. 

  46. J. Suh, B.C. Chang, and A.C. Lau, "Failure Tolerance of Sensors in Flight Control Systems in Electro-Magnetic Environment," Proceedings of the 17th Digital Avionics Systems Conference, Bellevue, Washington, November, 1998.

  47. B.C. Chang, H.G. Kwatny, and S.S. Hu, "An Application of Robust Feedback Linearization to a Ball and Beam Control Problem," Proceedings of the 1998 IEEE Control Conference on Control Applications, Trieste, Italy, September, 1998.

  48. S.S. Hu and B.C. Chang, "Design of a Nonlinear H-infinity Controller for the Inverted Pendulum System," Proceedings of the 1998 IEEE Control Conference on Control Applications, Trieste, Italy, September, 1998.

  49. B.C. Chang and A.C. Lau, "Robustness Issues of Flight Control in High-Intensity Radiated Fields," Proceedings of the 1998 American Control Conference, Philadelphia, June, 1998.

  50. C.M. Belcastro and B.C. Chang, "LFT Formulation for Multivariate Polynomial Problems," Proceedings of the 1998 American Control Conference, Philadelphia, June, 1998.

  51. H.G. Kwatny and B.C. Chang, "Generating Parameter-Dependent Linear Families from Nonlinear Dynamics," Proceedings of the 1998 American Control Conference, Philadelphia, June, 1998.

  52. S.S. Hu, P.H. Yang, and B.C. Chang, "A Computational Issue in Nonlinear H-infinity Control," Proceedings of the 1998 American Control Conference, Philadelphia, June, 1998.

  53. H.H. Yeh, B.C. Chang, and S.S. Banda, “Design of Nonlinear H-infinity Output Feedback Controllers,” Proceedings of the IASTED International Conference on CONTROL, Cancun, Mexico, May 1997.

  54. D. Malloy and B.C. Chang, "Regulator Design for Linear Parameter Varying Systems Using Dynamic Inversion," Proceedings of the 35th IEEE Conference on Decision and Control, Kobe, Japan, December, 1996.

  55. D. Malloy and B.C. Chang, "Stabilizing Controller Design for Linear Parameter Varying Systems Using Parameter Feedback," Proceedings of the 1996 AIAA Guidance, Navigation, and Control Conference, San Diego, July 1996.

  56. C.M. Belcastro, B.C. Chang, and R. Fischl, "A Matrix Approach to Low-order Uncertainty Modeling of Real Parameters," Proceedings of the 13th IFAC World Congress Conference, San Francisco, July, 1996.

  57. R. Zong, B.C. Chang, H.H. Yeh, and S.S. Banda, "An Approximate I/O Linearization via Nonlinear H-infinity Model Matching," Proceedings of the 34th IEEE Conference on Decision and Control, New Orleans, December, 1995.

  58. D. Malloy and B.C. Chang, "Improving the Robustness of Linear Parameter Varying Systems Using Parameter Feedback," Proceedings of the 33rd Allerton Conference on Communication, Control, and Computing, Monticello, IL, October 1995.

  59. H.H. Yeh, B.C. Chang, J. M. Berg, and S.S. Banda, "Dynamic Inversion of Linear Multivariable Systems with Observers," Proceedings of the 1995 American Control Conference, June 1995.

  60. J.C. Chen, K. Zhou, and B.C. Chang, "Closed-loop Controller Reduction by a Structured Truncation Approach," Proceedings of the 33rd IEEE Conference on Decision and Control, Dec. 1994.

  61. R. Zong and B.C. Chang, 'Monotonicity and Covexity of H-infinity Riccati Solutions in General Case," Proceedings of the 1994 American Control Conference, June 1994.

  62. X.P. Li and B.C. Chang, "A Parametrization Approach to Reduced-order H-infinity Controller Design," Proceedings of the 32nd IEEE Conference on Decision and Control, Dec. 1993.

  63. J.C. Chen and B.C. Chang, "H-infinity Controller Reduction with Closed-loop Stability Considerations,"  Proceedings of the 32nd IEEE Conference on Decision and Control, Dec. 1993.

  64. J.C. Chen and B.C. Chang," H2 Controller Reduction by Structured Truncation," Proceedings of the 1993 American Control Conference, June 1993.

  65. H. Bouguerra and B.C. Chang, "A Robust Power Absorbing Controller Design for Flexible Structures," Proceedings of the 1993 American Control Conference, June 1993.

  66. X.P. Li, J.C. Chen, S.S. Banda, and B.C. Chang, "An Application of -Synthesis to a Robust Flight Control Problem," Proceedings of the 12th World Congress of IFAC, July 1993.

  67. X. P. Li and B. C. Chang, "On Convexity of H-infinity Riccati Solutions and Its Applications,," IEEE Transactions on Automatic Control, Vol. AC-38, No.6, pp.963-966, June 1993.

  68. Christine M. Belcastro and B.C. Chang, "On Parametric Uncertainty Modeling for Real Parameter Variations," Proceedings of the 31st IEEE Conference on Decision and Control, Dec. 1992.

  69. X. P. Li and B.C. Chang, "An H-infinity Design for Aircraft Longitudinal Flight Control," Proceedings of the 1st IEEE Conference on Control Applications, pp.596-601, Dayton OH, Sept. 1992.

  70. X. P, Li, B. C. Chang, S. S. Banda, and H. H. Yeh, " Robust Control Systems Design Using H-infinity Optimization Theory," AIAA Journal of Guidance, Control, and Dynamics, Vol. 15, No. 4, pp. 944-952, July-August 1992.

  71. X. P. Li and B.C. Chang, "The Structure of -Domain for H-infinity Riccati Solutions," Proceedings of the 1992 American Control Conference, pp.1147-1148, Chicago, June 1992.

  72. H. H. Yeh, S. S. Banda, and B. C. Chang, "Necessary and Sufficient Conditions for Mixed H2 and H-infinity Optimal Control," IEEE Transactions on Automatic Control, Vol. 37, No. 3, pp.355-358, March 1992.

  73.  X.P. Li and B.C. Chang, "Properties of H-infinity Riccati Equations," an article in the book, Control of Uncertain Dynamic Systems, edited by S. P. Bhattacharyya and L. H. Keel, pp.77-94, CRC Press Inc., 1991.

  74. X.P. Li and B.C. Chang, "On Convexity of  H-infinity Riccati Solutions," Proceedings of IEEE Conference on Decision and Control, Dec. 1991.

  75. H. Bouguerra, B.C. Chang, H.H. Yeh, and S.S. Banda, "A Robust H-infinity Controller Design with H2 Consideration," Proceedings of IEEE Conference on Decision and Control, Dec. 1991.

  76.  B. C. Chang, X. P. Li, S. S. Banda, and H. H. Yeh, "Robust Control Systems Design by H-infinity Optimization Theory," Proceedings of the 1991 AIAA Guidance, Navigation, and Control Conference, pp.723-729, New Orleans, Aug. 1991.

  77. C. C. Belcastro, B. C. Chang, R. Zong, and R. Fischl, "Design of a Suboptimal H-infinity Controller with H2 and Bandwidth Constraints", Proceedings of the 1991 American Control Conference, June 1991.

  78. B. C. Chang, O. Ekdal, H. H. Yeh, and S. S. Banda, "Computation of the Real Structured Singular Value via Polytopic Polynomials," AIAA Journal of Guidance, Control, and Dynamics, Vol. 14, No. 1, pp. 140-147, Jan. 1991.

  79. H. H. Yeh, S. S. Banda, and B. C. Chang, "Necessary and Sufficient Conditions for Mixed H2 and H-infinity Optimal Control", Proceedings of IEEE Conference on Decision and Control, Dec. 1990.

  80. B. C. Chang, X. P. Li, S. S. Banda, and H. H. Yeh, "Design of an H-infinity Optimal Controller By Using DGKF's State-space Formulas", Proceedings of IEEE Conference on Decision and Control, Dec. 1990.

  81. B. C. Chang, X. P. Li, H. H. Yeh, and S. S. Banda, "Iterative Computation of the Optimal H-infinity Norm By Using Two-Riccati-Equation Method", Proceedings of IEEE Conference on Decision and Control, Dec. 1990.

  82. O. Ekdal and B. C. Chang, "Robust Stability Analysis of Real Structured Uncertain Systems", Proceedings of the 11th IFAC (International Federation of Automatic Control) World Congress, Aug. 1990, Tallinn, USSR.

  83. B. C. Chang, X. P. Li, S. S. Banda and H. H. Yeh, "Computation of the H-infinity Norm of a Transfer Function", Proceedings of the 1990 American Control conference, pp. 2578-2582, San Diego, May, 1990.

  84. B. C. Chang, S. S. Banda, and T. E. McQuade, "Fast Iterative Computation of Optimal Two-block H-infinity Norm", IEEE Transactions on Automatic Control, Vol. AC-34, No.7, pp.738-743, July 1989.

  85. B. C. Chang and A. Yousuff, "Pole Placement and the Observer-based Controller Parametri­za­tion", IEEE Transactions on Automatic Control, Vol. 35, No. 6, pp.726-729, June 1990.

  86. B. C. Chang and S. S. Banda, "Optimal H-infinity Norm Computation for MIMO Systems with Multiple Zeros", IEEE Transactions on Automatic Control, Vol.AC-34, No.5, pp.553-557, May 1989.

  87. B. C. Chang, O. Ekdal, H.H. Yeh, and S.S. Banda, "Computation of the Real Structured Singular Value via Polytopic Polynomials", Proceedings of the 1989 AIAA Guidance, Navigation and Control Conference, pp.709-716, Boston, August 1989. 

  88. H. Bouguerra, B. C. Chang, H. H. Yeh, and S. Banda, "Fast Stability Checking for the Convex Combination of Stable Polynomials", IEEE Transactions on Automatic Control, Vol. 35, No. 5, pp. 586-588, May 1990.

  89. A. Yousuff and B. C. Chang, "Controller Reduction via Observer-based Controller Parame­tri­zation", Proceedings of the IEEE 27th Conference on Decision and Control, Austin, Dec. 1988.

  90. B. C. Chang and O. Ekdal, "Stability Margin Computation for Systems with Dependent Uncertain Parameters via Polytopic Polynomials", Proceedings of the 1988 Communication and Control Conference, Baton Rouge, Oct. 1988.

  91. B. C. Chang and A. Yousuff, "A Straightforward Proof for the Observer-based Controller Parametri­za­tion", Proceedings of the AIAA Guidance, Navigation and Control Conference, Minneapolis, Aug. 1988.

  92. H. Bouguerra, B. C. Chang, H. H. Yeh, and S. S. Banda, "A Fast Algorithm for Checking the Stability of Convex Combinations of Stable Polynomials", Proceedings of the 28th IEEE Conference on Decision and Control, pp. 1888-1889, December 1989.

  93. C. C. Belcastro, B. C. Chang, and R. Fischl, "A Methodology for Formulating a Minimal Uncertainty Model for Robust Control System Design and Analysis", Proceedings of the 3rd Annual Conference on Aerospace Computational Control, pp.355-369, December, 1989.

  94. A. Yousuff, I. Dias, and B. C. Chang, "Controller Reduction by Direct Feed-Through", Proceedings of the 1989 American Control Conference, pp.1297-1298, Pittsburgh, June 1989.

  95. B. C. Chang and S. S. Banda, "Optimal H-Infinity Norm Computation for MIMO Systems with Multiple RHP Zeros", Proceedings of 1988 American Control Conference, Atlanta, June 1988.

  96. B. C. Chang, "Size Reduction in Four-Block H-Infinity Formulation", IEEE 26th CDC Conference Proceedings, Los Angeles, December 1987.

  97. B. C. Chang, "A Stable State-Space Realization in the Formulation of H-infinity Norm Computation",  IEEE Trans. on  Automatic Control, AC-32,  pp.811-815, Sept. 1987.

  98. B. C. Chang, S. S. Banda, and T. E. McQuade, "Fast Iterative Algorithm for H-infinity Optimization Problems", Proceedings of the 1987 American Control Conference, Minneapolis, June 1987.

  99. B. C. Chang and J. B. Pearson, "Iterative Computation of Minimal H-infinity Norm", IEEE 24th CDC Conference Proceedings, Fort Lauderdale, December 1985.

  100. B. C. Chang, "Inner-Outer Factorizations Arising in H-infinity Optimization Problems", Proceedings of 23rd Allerton Conference, Allerton, Illinois, Oct., 1985.

  101. B. C. Chang and J. B. Pearson, "Optimal Disturbance Reduction in Linear Multivariable Systems",  IEEE Transactions on Automatic Control, October, 1984.

  102. B. C. Chang and J. B. Pearson, "Algorithms for the Solution of Polynomial Equations Arising in Multivariable Control Theory", Proceedings of the 1983 American Control Conference, San Francisco, June 1983.

  103. B. C. Chang and J. B. Pearson, "Optimal Disturbance Reduction in Linear Multivariable Systems", IEEE 22nd CDC Conference Proceedings, San Antonio, December 1983.

Back to Top

Back to Home Page

Back to Vitae