Li, Fengquan. “Certain Regularity of the Entropy Solutions for Nonlinear Parabolic Equations With Irregular Data”. Ukrains’kyi Matematychnyi Zhurnal 67, no. 8 (August 25, 2015): 1107–1121. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/2049.