@article{RMI_2005_2005_1_a29,
     author = {Dungey, Nick},
     title = {Regularidad de orden superior para operadores subel{\'\i}pticos en grupos de {Lie} de crecimiento polin\'omico.},
     journal = {Revista matem\'atica iberoamericana},
     pages = {929-996},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMI_2005_2005_1_a29/}
}