Includes bibliographical references (pages 20-65).
Electronic reproduction. Washington, D.C. : National Aeronautics and Space Administration, [199u?]
Mode of access: Internet from NASA's Technical Reports Server. Address as of 2/9/09: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930011731%5F1993011731.pdf; current access available via PURL.