LEITE, Edir Junior Ferreira; MONTENEGRO, Marcos. On positive viscosity solutions of fractional Lane-Emden systems. Topological Methods in Nonlinear Analysis, [S. l.], v. 53, n. 2, p. 407–425, 2019. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2019.005. Acesso em: 8 jul. 2025.