?url_ver=Z39.88-2004&rft_id=10.1201%2Fb21942-50&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=E.N.&rft.au=Pakpahan%2C+E.N.&rft.aulast=Pakpahan&rft.isbn=9781138029781&rft.date=2016&rft.title=Petroleum+sludge+thermal+treatment+and+use+in+cement+replacement+%C3%A2%EF%BF%BD%EF%BF%BD+A+solution+towards+sustainability&rft.genre=proceeding