@article{oai:repository.dl.itc.u-tokyo.ac.jp:00032612, author = {Fujinawa, Yukio and Takahashi, Kozo and Matsumoto, Takumi and Iitaka, Hiroshi and Doi, Takuya and Nakayama, Takeshi and Sawada, Toyoaki and Sakai, Hideo}, issue = {3}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Feb}, note = {application/pdf}, pages = {391--415}, title = {Electric Field Variations Related to Seismic Swarms}, volume = {76}, year = {2002} }