@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034254, author = {Sato, Yasuo}, issue = {1-4}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Mar}, note = {application/pdf}, pages = {1--4}, title = {1. Mathematical Study of the Propagation of Waves upon Stratified Medium(1)}, volume = {26}, year = {1950} }