?url_ver=Z39.88-2004&rft_id=10.1108%2FIJSI-11-2017-0066&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Ridha%2C+S.&rft.aulast=Ridha&rft.aufirst=S.&rft.atitle=Influence+of+sulfuric+and+hydrochloric+acid+on+the+resistance+of+geopolymer+cement+with+nano-silica+additive+for+oil+well+cement+application&rft.pages=616-624&rft.volume=9&rft.issue=5&rft.title=International+Journal+of+Structural+Integrity&rft.issn=17579864&rft.date=2018&rft.genre=article