@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034414, author = {Kanai, Kiyoshi and Sezawa, Katsutada}, issue = {2}, journal = {東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University}, month = {Jun}, note = {application/pdf}, pages = {177--184}, title = {On the Problem of Instabilities of Higher Orders in a Seismometer. III. Experiments with a New Vertical Vibration Table}, volume = {19}, year = {1941} }