Domingos, A. R. and Ramos, M. (1998) “On the solvability of a resonant elliptic equation with asymmetric nonlinearity”, Topological Methods in Nonlinear Analysis, 11(1), pp. 45–57. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.1998.003 (Accessed: 26 April 2024).