CHABROWSKI, J.; SZULKIN, A.; WILLEM, M. Schrödinger equation with multiparticle potential and critical nonlinearity. Topological Methods in Nonlinear Analysis, [S. l.], v. 34, n. 2, p. 201–211, 2009. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2009.038. Acesso em: 28 mar. 2024.