?url_ver=Z39.88-2004&rft_id=10.3390%2Fmembranes12030271&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S.&rft.au=Waqas%2C+S.&rft.aulast=Waqas&rft.atitle=Response+Surface+Methodology+for+Optimization+of+Rotating+Biological+Contactor+Combined+with+External+Membrane+Filtration+for+Wastewater+Treatment&rft.issue=3&rft.volume=12&rft.issn=20770375&rft.date=2022&rft.title=Membranes&rft.genre=article