@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040955,
 author = {Omori, F.},
 issue = {2},
 journal = {Bulletin of the Imperial Earthquake Investigation Committee},
 month = {Oct},
 note = {application/pdf},
 pages = {185--195},
 title = {The After-shocks of the Zenkoji (1847) and the Tenpo (1830) Earthquakes},
 volume = {2},
 year = {1908}
}