@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040976,
 author = {Omori, F.},
 issue = {3},
 journal = {Bulletin of the Imperial Earthquake Investigation Committee},
 month = {Jul},
 note = {附図６頁},
 pages = {145--154},
 title = {Seismograms Showing no Preliminary Tremor},
 volume = {1},
 year = {1907}
}