Rasulov MS, Takhirov ZO. Problem with free boundary for the systems of equations of reaction-diffusion type. Ukr. Mat. Zhurn. [Internet]. 2017 Dec. 25 [cited 2025 Dec. 5];69(12):1690-70. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1812