?url_ver=Z39.88-2004&rft_id=MTMT%3A2036345&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Kalm%C3%A1r&rft.aufirst=Imre&rft.au=+Kalm%C3%A1r+Imre&rft.volume=2010&rft.issn=1788-6392&rft.title=REVIEW+OF+FACULTY+OF+ENGINEERING+ANALECTA+TECHNICA+SZEGEDINENSIA&rft.pages=122-127&rft.atitle=Energy+naturally+-+biogas+and+biodiesel&rft.issue=2-3&rft.date=2010&rft.genre=article