@article{EXMATH_2006_2006_1_a15,
     author = {Kumar, Romesh and Singh, Kanwar Jatinder},
     title = {Norma esencial de operadores de composici\'on ponderada en el espacio de {Dirichlet.}},
     journal = {Extracta mathematicae},
     pages = {249-259},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2006_2006_1_a15/}
}