Berezovsky AA, Berezovs’kyi MA, Mitropolskiy YA. Problems with free boundaries for nonlinear parabolic equations. Ukr. Mat. Zhurn. [Internet]. 1997Oct.25 [cited 2024May17];49(10):1360–1372. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5134