@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034276,
 author = {Rikitake, Tsuneji},
 issue = {1-4},
 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 = {9--13},
 title = {3. A Method for Studying the Relations between the Changes in Geomagnetism and Earth Current},
 volume = {25},
 year = {1949}
}