Abid, Muhammad, and Kh. S. Karimov. “COMBINED UNCOVERED SHEET-AND-TUBE PVT-COLLECTOR SYSTEM WITH BUILT-IN STORAGE WATER HEATER”. IIUM Engineering Journal 12, no. 6 (February 20, 2012). Accessed October 1, 2023. https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/119.