@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033546,
 author = {Tujiura, Masaru},
 issue = {3},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Jan},
 note = {application/pdf},
 pages = {873--891},
 title = {Frequency Analysis of Seismic Waves (1)},
 volume = {44},
 year = {1967}
}