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 "Heinrich, Bernd",Finite difference methods on irregular networks : a generalized approach to second order elliptic problems,,Akademie-Verlag,1987,Mathematical research = Mathematische Forschung,,3055003284,,https://cir.nii.ac.jp/crid/1130282271611649408