TY  - GEN
AU  - Bonfiglioli,A.
AU  - Lanconelli, E
AU  - Uguzzoni, F. 
TI  - Stratified lie groups and potential theory for their sub-laplacians
U1  - 515.96 
PY  - 2007///
CY  - Heidelberg
PB  - Springer-Verlag
ER  -