I. I. Kovtun and M. N. Feller, “Boundary-value problems for a nonlinear parabolic equation with Lévy Laplacian resolved with respect to the derivative”, Ukr. Mat. Zhurn., vol. 62, no. 10, pp. 1400–1407, Oct. 2010, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2964