DANCER, E. Norman; YAN, Shusen. Effect of the domain geometry on the existence of multipeak solutions for an elliptic problem. Topological Methods in Nonlinear Analysis, [S. l.], v. 14, n. 1, p. 1–38, 1999. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1999.020. Acesso em: 8 jul. 2025.