@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033320, author = {神沼, 克伊 and 後藤, 良子}, issue = {3}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Aug}, note = {application/pdf}, pages = {507--520}, title = {28.日本における大地震の余震の研究・観測について}, volume = {48}, year = {1970} }