@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033292, author = {Nagumo, Shozaburo}, issue = {5}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Dec}, note = {application/pdf}, pages = {749--758}, title = {40. Development of the Frequency Distribution of Earthquakes with Respect to the Magnitude in the Aftershocks of the 1968 Tokachi-Oki Earthquake}, volume = {48}, year = {1970} }