@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034005,
 author = {Hisada, Toshihiko and Nakagawa, Kyoji},
 issue = {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 = {689--698},
 title = {Steady State Non-linear Vibration of Two Story Buildings},
 volume = {33},
 year = {1956}
}