Melo, Jessyca Lange Fereira, and Ederson Moreira dos Santos. “A Fourth-Order Equation With Critical Growth: The Effect of the Domain Topology”. Topological Methods in Nonlinear Analysis 45, no. 2 (June 1, 2015): 551–574. Accessed April 19, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2015.026.