@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033592,
 author = {Sasai, Yoichi},
 issue = {1},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Jul},
 note = {application/pdf},
 pages = {167--178},
 title = {The Anomalous Behaviour of Geomagnetic Variations of Short Period in Japan and Its Relation to the Subterranean Structure. The 11th report : Spectral analysis of geomagnetic disturbances},
 volume = {44},
 year = {1966}
}