@article{EXMATH_1996_1996_1_a11,
     author = {Zahid, Mehdi},
     title = {Funcional aditivo y elipticidad.},
     journal = {Extracta mathematicae},
     pages = {288-300},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1996},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1996_1996_1_a11/}
}