Pukalskyi, I. D., and B. O. Yashan. “Boundary-Value Problem With Impulsive Action for a Parabolic Equation With Degeneration”. Ukrains’kyi Matematychnyi Zhurnal 71, no. 5 (May 25, 2019): 645–655. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/1463.