?url_ver=Z39.88-2004&rft_id=10.1080%2F01457632.2020.1777004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J.&rft.au=Akhter%2C+J.&rft.aulast=Akhter&rft.title=Heat+Transfer+Engineering&rft.issn=01457632&rft.atitle=Performance+Evaluation+of+a+Modified+Compound+Parabolic+Concentrating+Collector+with+Varying+Concentration+Ratio&rft.volume=42&rft.date=2021&rft.pages=1117-1131&rft.issue=13-14&rft.genre=article