?url_ver=Z39.88-2004&rft_id=doi%3A10.1016%2Fj.ijrmms.2004.08.001&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Cai%2C+M.+F.&rft.aulast=Cai&rft.aufirst=M.+F.&rft.issue=1&rft.volume=42&rft.date=10+November+2004&rft.issn=1365-1609&rft.atitle=Study+of+the+time%E2%80%93space%E2%80%93strength+relation+for+mining+seismicity+at+Laohutai+coal+mine+and+its+prediction&rft.title=International+Journal+of+Rock+Mechanics+and+Mining+Sciences&rft.pages=145-151&rft.genre=article