Eric Miller, Alan Willsky.
Includes bibliographical references (leaf 4).
Supported by the Office of Naval Research. N00014-91-J-1004 Supported by the U.S. Army Research Office. DAAL03-92-G-0115 Supported by the Air Force Office of Scientific Research. AFOSR-92-J-0002 Supported by a fellowship from Schlumberger-Doll Research.