@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034099, author = {金井, 清 and 長田, 甲斐男 and 吉沢, 靜代}, issue = {1}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Apr}, note = {application/pdf}, pages = {45--55}, title = {4. The Relation between the Amplitude and the Period of Earthquake Motion}, volume = {31}, year = {1953} }