Lerch, F. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wagner, C. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Smith, D. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Andson, M. L. (Computer Sci. Corp. Falls Church, Va., United States)
Brownd, J. E. (Computer Sci. Corp. Falls Church, Va., United States)
Richardson, J. A. (Computer Sci. Corp. Falls Church, Va., United States)