@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033194,
 author = {宇佐美, 龍夫 and 渡辺, 唯夫},
 issue = {3-4},
 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 = {379--406},
 title = {関東地方の地震の巣 : 定義と性質},
 volume = {52},
 year = {1978}
}