@article{RMI_2001_2001_1_a20,
     author = {Damek, Ewa and Hulanicki, Andrzej and Urban, Roman},
     title = {Frontera de {Martin} para variedades riemannianas homog\'eneas de curvatura negativa en el fondo del espectro.},
     journal = {Revista matem\'atica iberoamericana},
     pages = {257-293},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMI_2001_2001_1_a20/}
}