A study of supernova remnants with center-filled X-ray morphology [microform] : NASA grant NAG5-3486, annual report for the period 15 November 1996 through 14 November 1997 / principal investigator, Patrick O. Slane
原資料の出版事項: [Washington, DC ; Springfield, Va. : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1997]