@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033460,
 author = {Yoshiyama, Ryoichi},
 issue = {1},
 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 = {25--39},
 title = {2. Maximum Amplitude and Epicentral Distance 2 : Approach to Source Spectrum of Earthquakes},
 volume = {46},
 year = {1968}
}