著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
European Space Agency. Earth Sciences Division and European Space Agency and European Space Agency. Earth Observation Preparatory Programme,Gravity field and steady-state ocean circulation mission,,"ESA Publications Division, ESTEC",1999,ESA SP,,9290925280,,https://cir.nii.ac.jp/crid/1130000797574679808