?url_ver=Z39.88-2004&rft_id=10.1080%2F00986445.2014.952812&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Gholami%2C+Z.&rft.aulast=Gholami&rft.aufirst=Z.&rft.issn=00986445&rft.date=2015&rft.issue=10&rft.atitle=Catalytic+Etherification+of+Glycerol+to+Diglycerol+Over+Heterogeneous+Calcium-Based+Mixed-Oxide+Catalyst%3A+Reusability+and+Stability&rft.pages=1397-1405&rft.volume=202&rft.title=Chemical+Engineering+Communications&rft.genre=article