Il’nyts’kaО. V., and BokaloM. M. “Boundary-Value Problem for Nonlinear Degenerated Parabolic Equations With Variable Delay”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 9 (September 25, 2016): 1155-1168. Accessed November 25, 2020. http://umj.imath.kiev.ua/index.php/umj/article/view/1911.