?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Aki%2C+Keiiti&rft.aulast=Aki&rft.aufirst=Keiiti&rft.volume=43&rft.date=1965&rft.issn=0040-8972&rft.atitle=Maximum+likelihood+estimate+of+b+in+the+formula+logN%3Da-bM+and+its+confidence+limits.&rft.title=Bulletin+of+Earthquake+Research+Institute+of+the+University+of+Tokyo&rft.pages=237-239&rft.genre=article