@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034720, author = {Sezawa, Katsutada and Kanai, Kiyoshi}, issue = {3}, journal = {東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University}, month = {Sep}, note = {application/pdf}, pages = {484--495}, title = {The Rate of Damping in Seismic Vibrations of a Surface Layer of Varying Density or Elasticity}, volume = {13}, year = {1935} }