@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034423,
 author = {Matuzawa, Takeo},
 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},
 pages = {411--415},
 title = {Uber die empirische Formel von Ishimoto und Iida nam=k zwischen der Bebenhaufigkeit n und der Amplitude a},
 volume = {19},
 year = {1941}
}