@article{EXMATH_1990_1990_1_a0,
     author = {Fern\'andez Castillo, Jes\'us M.},
     title = {Factorizaci\'on proporcional de ideales de entrop{\'\i}a.},
     journal = {Extracta mathematicae},
     pages = {1-3},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1990_1990_1_a0/}
}