@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034478, author = {Iida, Kumizi}, issue = {4}, journal = {東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University}, month = {Dec}, note = {application/pdf}, pages = {783--808}, title = {51. Velocity of Elastic Waves in a Granular Substance}, volume = {17}, year = {1939} }