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
"廣澤, 史彦",On the cauchy problem for second order strictly hyperbolic equations with non-regular coefficients,,"Institute of Mathematics, University of Tsukuba",2001,Mathematical research note,,,,https://cir.nii.ac.jp/crid/1130000794921514624