In-space transportation with tethers [microform] : NASA grant NAG8-1303, annual report for the period 1 September 1996 through 31 August 1997 / principal investigator, Enrico C. Lorenzini; co-investigators, Robert D. Estes, Mario L. Cosmo
原資料の出版事項: Cambridge, Mass. ; [Washington, DC ; Springfield, Va. : Smithsonian Institution, Astrophysical Observatory : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1997]