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
"砂川, 秀明",Lower bounds of the lifespan of small data solutions to the nonlinear Schrödinger equations,,"Institute of Mathematics, University of Tsukuba",2005,Mathematical research note,,,,https://cir.nii.ac.jp/crid/1130282269086838528