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) Bjorn Engquist and Andrew Majda,Radiation boundary conditions for acoustic and elastic wave calculations,Communications on Pure and Applied Mathematics,0010-3640,Wiley,1979-05,32,3,313-357,https://cir.nii.ac.jp/crid/1361418518780819072,https://doi.org/10.1002/cpa.3160320303