@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033468,
 author = {Usami, Tatsuo and Kotake, Yoshiko and Sato, Yasuo},
 issue = {4},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Feb},
 note = {application/pdf},
 pages = {945--961},
 title = {Soft Core Spectrum Splitting and Related Problems of the Spheroidal Oscillations of an Elastic Sphere with a Homogeneous Mantle and Core},
 volume = {45},
 year = {1968}
}