TORRES, C.; ZHANG, Z. Concentration of ground state solutions for fractional Hamiltonian systems. Topological Methods in Nonlinear Analysis, [S. l.], v. 50, n. 2, p. 623–642, 2017. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2017.033. Acesso em: 3 lip. 2024.