?url_ver=Z39.88-2004&rft_id=doi%3A10.2478%2Fv10267-012-0016-3&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Marcak%2C+Henryk&rft.aulast=Marcak&rft.aufirst=Henryk&rft.issue=1&rft.volume=57&rft.date=October+2012&rft.issn=0860-7001&rft.atitle=Seismicity+in+mines+due+to+roof+layer+bending&rft.title=Archives+of+Mining+Sciences&rft.genre=article