@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033462, author = {Mogi, Kiyoo}, issue = {1}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Mar}, note = {application/pdf}, pages = {53--74}, title = {4. Migration of Seismic Activity}, volume = {46}, year = {1968} }