@article{EXMATH_1995_1995_1_a19,
     author = {Acosta, Mar{\'\i}a D.},
     title = {Una desigualdad para norma de operadores.},
     journal = {Extracta mathematicae},
     pages = {115-118},
     year = {1995},
     volume = {10},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1995_1995_1_a19/}
}