?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Nizar&rft.au=Nizar%2C+Umar+Kalmar&rft.aufirst=Umar+Kalmar&rft.pages=1-8&rft.atitle=The+E%EF%AC%80ect+of+Titanium+Tetrahedral+Coordination+of+Silica-+Titania+Catalyst+on+the+Physical+Properties+of+Biodiesel&rft.issn=Online%3A+1757-899X&rft.title=IOP+Conference+Series%3A+Materials+Science+and+Engineering&rft.volume=335&rft.genre=article