Lorenzini, Enrico.
Cambridge, Mass. : Smithsonian Institution Astrophysical Observatory ; Huntsville, Ala. : National Aeronautics and Space Administration, Marshall Space Flight Center, [1986]
1986
Stoughton, R. M.
Hampton, Va. : National Aeronautcs and Space Administration, Langley Research Center ; [Springfield, Va. : For sale by the National Technical Information Service, 1990]
1990