@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033888, author = {Asano, Shuzo and Den, Nozomu and Mikumo, Takeshi and Shima, Etsuzo and Usami, Tatsuo}, issue = {2}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Aug}, note = {application/pdf}, pages = {279--306}, title = {On the Travel-Times of S-Waves, Derived from the Explosion Seismic Observations}, volume = {37}, year = {1959} }