著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Wlodzimierz Proskurowski and Olof Widlund,On the Numerical Solution of Helmholtz's Equation by the Capacitance Matrix Method,Mathematics of Computation,0025-5718,JSTOR,1976-07,30,135,433,https://cir.nii.ac.jp/crid/1361981470640408064,https://doi.org/10.2307/2005318