AfanasevaN. V., & TedeevA. F. (2005). Theorems on the existence and nonexistence of solutions of the Cauchy problem for degenerate parabolic equations with nonlocal source. Ukrains’kyi Matematychnyi Zhurnal, 57(11), 1443–1464. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/3700