@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034216, author = {Takahashi, Takehito and Takahashi, Yasuo}, issue = {1-2}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Oct}, note = {application/pdf}, pages = {37--43}, title = {4. On the Theory of Elastic Waves in Granular Substance. II}, volume = {28}, year = {1950} }