%0 Journal Article %A Camillo Melzi %T Sub-Laplacian with drift in nilpotent Lie groups %J Colloquium Mathematicum %D 2003 %P 41-53 %V 96 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm96-1-5/ %R 10.4064/cm96-1-5 %G en %F 10_4064_cm96_1_5