?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=+P%C3%BCsp%C3%B6ki+Zolt%C3%A1n&rft.aulast=P%C3%BCsp%C3%B6ki&rft.aufirst=Zolt%C3%A1n&rft.volume=4&rft.issn=0365-8066&rft.title=Acta+mineralogica-petrographica&rft.pages=89&rft.atitle=Mineralogical+and+geochemical+characteristics+of+the+Sarmathian+bentonite+in+the+Borsod+Basin+(N+Hungary)&rft.date=2004&rft.genre=article