?url_ver=Z39.88-2004&rft_id=doi%3A10.1007%2FBF00881745&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Kijko%2C+Andrzej&rft.aulast=Kijko&rft.aufirst=Andrzej&rft.issue=4&rft.volume=127&rft.date=December+1988&rft.issn=0033-4553&rft.atitle=Maximum+likelihood+estimation+of+Gutenberg-Richterb+parameter+for+uncertain+magnitude+values&rft.title=Pure+and+Applied+Geophysics&rft.pages=573-579&rft.genre=article