@article{RRACEFN_1994_1994_1_a5,
     author = {Novo, V. and  Rodr{\'\i}guez Mar{\'\i}n, L.},
     title = {A generalized differential of real functionals.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales},
     pages = {287-296},
     year = {1994},
     volume = {88},
     number = {2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1994_1994_1_a5/}
}