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 "Lefeber, Dirk",Solving problems with singularities using boundary elements,,Computational Mechanics,1989,Topics in engineering,,"0905451961,0931215854",,https://cir.nii.ac.jp/crid/1130000797119252096