Mustafa, Ahmed Waheed, and Jaafar Ahmed Zahi. “The Optimal Spacing Between Elliptic Tubes Cooled by Free Convection Using Constructal Theory”. Al-Nahrain Journal for Engineering Sciences 20, no. 3 (June 14, 2017): 762–769. Accessed April 18, 2025. https://nahje.com/index.php/main/article/view/293.