Hydrogen Maser Clock (HMC) experiment [microform] : final report, 19 July 1991 - 28 February 1997, NAS8-39194 / Robert F.C. Vessot, principal investigator; Edward M. Mattison, co-investigator
原資料の出版事項: [Cambridge, Mass.] ; [Washington, DC ; Springfield, Va. : Smithsonian Astrophysical Observatory : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1997]