HE, C.; LI, G. The regularity of weak solutions to nonlinear scalar field elliptic equations containing p&q-Laplacians. Annales Fennici Mathematici, [S. l.], v. 33, n. 2, p. 337–371, 2008. Disponível em: https://afm.journal.fi/article/view/135236. Acesso em: 17 maj. 2024.