Mitropolsky , Y.A., Berezovsky, A.A. and Plotnitsky, T.A. (1992) “Problems with free boundaries for the nonlinear evolution equation in problems of metallurgy, medicine, ecology”, Ukrains’kyi Matematychnyi Zhurnal, 44(1), pp. 67–76. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/7796 (Accessed: 6 December 2025).