?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Ismaeel%2C+A.A.&rft.aulast=Ismaeel&rft.aufirst=A.A.&rft.title=ARPN+Journal+of+Engineering+and+Applied+Sciences&rft.date=2016&rft.issue=20&rft.volume=11&rft.issn=18196608&rft.pages=12170-12175&rft.atitle=Comparative+critique+on+the+performance+evaluation+of+a+solar+-+air+heater+for+natural+updraft+solar+system&rft.genre=article