DANCER, E. N. Connectedness of the branch of positive solutions of some weakly nonlinear elliptic equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 2, n. 1, p. 91–104, 1993. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1993.032. Acesso em: 22 sep. 2023.