@article{oai:repository.dl.itc.u-tokyo.ac.jp:00032568,
 author = {Ide, Satoshi},
 issue = {1},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {59--65},
 title = {Fracture surface energy of natural earthquakes from the viewpoint of seismic observations},
 volume = {78},
 year = {2003}
}