?url_ver=Z39.88-2004&rft_id=doi%3A10.1111%2Fj.1365-246X.2008.03997.x&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Weatherill%2C+Graeme&rft.aulast=Weatherill&rft.aufirst=Graeme&rft.issue=2&rft.volume=176&rft.date=February+2009&rft.issn=0956-540X&rft.atitle=Delineation+of+shallow+seismic+source+zones+using+K-means+cluster+analysis%2C+with+application+to+the+Aegean+region&rft.title=Geophysical+Journal+International&rft.pages=565-588&rft.genre=article