Liu, Duchao, and Jinghua Yao. “A Class of De Giorgi Type and Local Boundedness”. Topological Methods in Nonlinear Analysis 51, no. 2 (April 22, 2018): 345–370. Accessed February 4, 2026. https://apcz.umk.pl/TMNA/article/view/TMNA.2017.063.