CHABROWSKI, J.; YANG, J. Sharp Sobolev inequality involving a critical nonlinearity on a boundary. Topological Methods in Nonlinear Analysis, [S. l.], v. 25, n. 1, p. 135–153, 2005. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2005.006. Acesso em: 22 lip. 2024.