H. I. Berehova and V. M. Kirilich, “Hyperbolic stefan problem in a curvilinear sector”, Ukr. Mat. Zhurn., vol. 49, no. 12, pp. 1684–1689, Dec. 1997, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5173