@article{oai:repository.dl.itc.u-tokyo.ac.jp:00022012, author = {SHIMIZU, Nobuyuki}, issue = {11}, journal = {生産研究}, month = {Nov}, note = {application/pdf}, pages = {624--625}, title = {研究速報 : FLUCTUATIONS OF RESPONSE SPECTRA PART 2 : THEORETICAL EVALUATION ON THE EFFECT OF THE EARTHQUAKE DURATION}, volume = {21}, year = {1969} }