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
"Reissig, Michael and 木下, 保",About the loss of derivatives for strictly hyperbolic equations with non-Lipschitz coefficients,,"Institute of Mathematics, University of Tsukuba",2004,Mathematical research note,,,,https://cir.nii.ac.jp/crid/1130282272384722560