Skiepko, J. and Ngoc Hien, H. (1986) “Natural Convection Between Two Nonuniformly Heated Coaxial Cylinders”, Engineering Transactions, 34(1-2), pp. 25–46. Available at: https://et3.ippt.pan.pl/index.php/et/article/view/1795 (Accessed: 9 June 2025).