Paul W. Fieguth ... [et al.].Includes bibliographical references (p. 18-20).Supported by the Office of Naval Research. N00014-91-J-1004 Supported by the Draper Laboratory. DL-H-467133 Supported by the Air Force Office of Scientific Research. F49620-92-J-0002 Supported by the Natural Sciences and Engineering Research Council of Canada. NSERC-67 Supported by NASA. NAGW-1048