Akeel A. Mohammed, Dr., and Ameer A. Jadoaa. “Experimental Study into Effect of Developing Section Length on The Heat Transfer Process in a Horizontal Annulus”. Al-Rafidain Engineering Journal (AREJ) 19, no. 6 (December 28, 2011): 62–72. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/26934.