@article{10_4064_sm_101_1_33_68,
     author = {Ewa Damek},
     title = {Maximal functions related to subelliptic operators invariant under an action of a solvable {Lie} group},
     journal = {Studia Mathematica},
     pages = {33--68},
     publisher = {mathdoc},
     volume = {101},
     number = {1},
     year = {1991},
     doi = {10.4064/sm-101-1-33-68},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-101-1-33-68/}
}