ROSAT PSPC observations of CL0016+16 [microform] : NASA grant NAG5-2156, annual report no. 4 for the period 15 December 1995 through 14 December 1996 / principal investigator, John P. Hughes
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, 1996]