@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034131, author = {佐藤, 泰夫}, issue = {4}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Dec}, note = {application/pdf}, pages = {519--528}, title = {Study on Surface Waves IV. : Equivalent Single Layer to Double Superficial Layer}, volume = {29}, year = {1951} }