@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033214,
 author = {吉田, 満},
 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 = {1--10},
 title = {Group Velocity Distribution of Rayleigh Waves for the Period 50 Seconds in the Pacific Ocean},
 volume = {52},
 year = {1977}
}