@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033200, author = {萩原, 幸男 and 田島, 広一 and 井筒屋, 貞勝 and 花田, 英夫}, issue = {2}, 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 = {141--150}, title = {伊豆半島東部の群発地震活動に伴う重力変化}, volume = {52}, year = {1978} }