@article{EXMATH_1990_1990_1_a4,
     author = {Arcoya, David and Ca\~nada, Antonio},
     title = {El principio variacional dual y problemas el{\'\i}pticos discontinuos con fuerte resonancia en el infinito.},
     journal = {Extracta mathematicae},
     pages = {12-14},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1990_1990_1_a4/}
}