[1]
D. V. Portnyagin, “Boundedness of weak solutions of a nondiagonal singular parabolic system of three equations”, Ukr. Mat. Zhurn., vol. 58, no. 8, pp. 1084–1096, Aug. 2006, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3515