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) Emura K,"Elastic waves generated by a directional source,pt.1","Science Reports of the Tohoku University. 5th Ser., Geophysics",00408794,Sendai : Faculty of Science,1961-08,13,2,????,https://cir.nii.ac.jp/crid/1520290884037270016,