?url_ver=Z39.88-2004&rft_id=doi%3A10.5194%2Fnhess-11-2663-2011&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Lebert%2C+F.&rft.aulast=Lebert&rft.aufirst=F.&rft.issue=9&rft.volume=11&rft.date=2011&rft.issn=1684-9981&rft.atitle=Hydroacoustic+monitoring+of+a+salt+cavity%3A+an+analysis+of+precursory+events+of+the+collapse&rft.title=Natural+Hazards+and+Earth+System+Science&rft.pages=2663-2675&rft.genre=article