@article{MZ_1995__218_4_174734,
     author = {Ewa Damek},
     title = {Maximal functions related to subelliptic operators with polynomially growing coefficients.},
     journal = {Mathematische Zeitschrift},
     pages = {349--374},
     publisher = {mathdoc},
     volume = {218},
     number = {4},
     year = {1995},
     zbl = {0824.43005},
     url = {http://geodesic.mathdoc.fr/item/MZ_1995__218_4_174734/}
}