?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Bergstrom%2C+Pekka&rft.aulast=Bergstrom&rft.aufirst=Pekka&rft.date=2014&rft.isbn=978-0-9870937-9-0&rft.title=From+high+stress+to+de-stressed+%E2%80%93+mining+in+changing+conditions&rft.btitle=Proceedings+of+the+Seventh+International+Conference+on+Deep+and+High+Stress+Mining&rft.genre=bookitem