Non-resonance of the first two eigenvalues of a quasilinear problem. (Non-résonance entre les deux premières valeurs propres d'un problème quasi-linéaire.) El Amrouss, A.R.; Moussaoui, M. — 1997 Bulletin of the Belgian Mathematical Society - Simon Stevin
Solvability of a semilinear boundary value problem with respect to the first eigenvalue. (Solvabilité d'un problem aux limites semi-linéaire autour de la première valeur propre.) El Amrouss, A.R.; Moussaoui, M. — 1997 Bulletin of the Belgian Mathematical Society - Simon Stevin
Minimax principles for critical-point theory in applications to quasilinear boundary-value problems. El Amrouss, A.R.; Moussaoui, M. — 2000 Electronic Journal of Differential Equations (EJDE) [electronic only]