?url_ver=Z39.88-2004&rft_id=10.3390%2Fma14216308&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M.U.&rft.aulast=Kankia&rft.au=Kankia%2C+M.U.&rft.title=Materials&rft.date=2021&rft.issue=21&rft.volume=14&rft.issn=19961944&rft.atitle=Optimization+of+cement-based+mortar+containing+oily+sludge+ash+by+response+surface+methodology&rft.genre=article