CHE, G.; CHEN, H. Ground state solutions for a class of semilinear elliptic systems with sum of periodic and vanishing potentials. Topological Methods in Nonlinear Analysis, [S. l.], v. 51, n. 1, p. 215–242, 2017. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2017.046. Acesso em: 22 jul. 2024.