?url_ver=Z39.88-2004&rft_id=10.26480%2Fjmerd.04.2019.269.271&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Al-Kayiem%2C+H.H.&rft.aulast=Al-Kayiem&rft.aufirst=H.H.&rft.title=Journal+of+Mechanical+Engineering+Research+and+Developments&rft.date=2019&rft.issue=4&rft.volume=42&rft.issn=10241752&rft.pages=269-271&rft.atitle=Solar+thermal%3A+Technical+challenges+and+solutions+for+power+generation&rft.genre=article