?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Spottiswoode%2C+Steve&rft.aulast=Spottiswoode&rft.aufirst=Steve&rft.date=10+January+2009&rft.title=Challenges+in+mine+seismology&rft.genre=proceeding