@article{10_4064_cm104_2_6,
     author = {Ewa Damek and Andrzej Hulanicki},
     title = {Asymptotic behavior of the invariant measure
  for a diffusion related to an $NA$ group},
     journal = {Colloquium Mathematicum},
     pages = {285--309},
     publisher = {mathdoc},
     volume = {104},
     number = {2},
     year = {2006},
     doi = {10.4064/cm104-2-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm104-2-6/}
}