Abdul-Wahab, Majid. “Heat Transfer in Bubble Column Contactors With Immersed Coiled Heater”. Iraqi Journal of Chemical and Petroleum Engineering 1, no. 1 (December 31, 2000): 1–6. Accessed March 29, 2025. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/526.