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 "Babich, V. M.",Mathematical questions in the theory of wave diffraction,,American Mathematical Society,1974,Proceedings of the Steklov Institute of Mathematics,,0821830155,,https://cir.nii.ac.jp/crid/1130000797335236608