@article{TEIO_1983_1983_1_a10,
     author = {Gil Alvarez, Mar{\'\i}a Angeles},
     title = {Caracterizaci\'on axiom\'atica para la varianza.},
     journal = {Trabajos de estad{\'\i}stica y de investigaci\'on operativa},
     pages = {40-51},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1983},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/TEIO_1983_1983_1_a10/}
}