@article{oai:tohoku.repo.nii.ac.jp:00011834,
 author = {Ohtake, Masakazu},
 issue = {3},
 journal = {The science reports of the Tohoku University. Fifth series, Tohoku geophysical journal},
 month = {Oct},
 note = {application/pdf, 紀要類 (bulletin), 743819 bytes},
 pages = {115--120},
 title = {Derivation of the Three-Parameter Model of Frequency Distribution of Earthquake Magnitude},
 volume = {34},
 year = {1993}
}