K. Ahmed Al Joboury, O., Farhan Yaseen, K., & Majeed Ali, O. (2009). Expermintal And Theoretical Study Of Natural Convection Heat Transfer Between Two Concentric Cylinders Filled With Porous Medium. Al-Rafidain Engineering Journal (AREJ), 17(6), 65–75. https://doi.org/10.33899/rengj.2009.43639