Ali, Issam M., and Hani A .Jasim. “An Experimental Study of Capillary Tubes Behavior With R-12 and R-134a”. Al-Khwarizmi Engineering Journal 1, no. 1 (December 27, 2017): 73–82. Accessed January 3, 2026. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/23.