Rachel E. Learned, Alan S. Willsky.
Caption title.
Includes bibliographical references (p. 34).
Supported by the Charles Stark Draper Laboratory under a research fellowship. Supported by the Draper Laboratory IR&D Program. DL-H-467133 Supported by the Air Force Office of Scientific Research. AFSOR-92-J-0002 Supported by the Army Research Office. DAAL03-92-G-0115