?url_ver=Z39.88-2004&rft_id=doi%3A10.1111%2Fj.1365-246X.2006.03227.x&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Stec%2C+Krystyna&rft.aulast=Stec&rft.aufirst=Krystyna&rft.issue=2&rft.volume=168&rft.date=2007&rft.issn=0956-540X&rft.atitle=Characteristics+of+seismic+activity+of+the+Upper+Silesian+Coal+Basin+in+Poland&rft.title=Geophysical+Journal+International&rft.pages=757-768&rft.genre=article