@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033215, author = {松本, 英照 and 高橋, 道夫}, issue = {1}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Nov}, note = {application/pdf}, pages = {11--27}, title = {Development of the Portable Easy-Operation Long-Period Seismometer. : Part 2 : Peripheral Device}, volume = {52}, year = {1977} }