@article{MAN_1993__296_4_165101,
     author = {Bernhard Leeb},
     title = {Harmonic functions along {Brownan} balls an the {Liouville} property for solvable {Lie} groups.},
     journal = {Mathematische Annalen},
     pages = {577--584},
     year = {1993},
     volume = {296},
     number = {4},
     zbl = {0806.60061},
     url = {http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165101/}
}