William S. Song and Bruce R. Musicus.Also issued as Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1989.Includes bibliographical references (p. 141-143).Supported in part by U.S. Air Force Office of Scientific Research. AFOSR 86-0164 Supported in part by Charles S. Draper Laborarory. DL-H-404158