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
"Yakubov, S. (Sasun)",Completeness of root functions of regular differential operators,,"Longman Scientific & Technical,John Wiley & Sons",1994,Pitman monographs and surveys in pure and applied mathematics,,0582236924,,https://cir.nii.ac.jp/crid/1130000795063614720