Moussaoui M. A nonresonance between non-consecutive eigenvalues of semilinear elliptic equations : Variational methods. Proyecciones (Antofagasta, On line) [Internet]. 2017Apr.24 [cited 2024Apr.26];20(1):53-6. Available from: https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/1514