Michael D. Richard.Includes bibliographical references (p. 89-90).Supported by the Defense Advanced Research Projects Agency, monitored by the U.S. Navy Office of Naval Research. N00014-89-J-1489 Supported by the U.S. Air Force Office of Scientific Research. AFOSR-91-0034-A Supported by a subcontract from Lockheed Sanders, Inc., under U.S. Navy Office of Naval Research grant. N00014-91-C-0125