%0 Journal Article %A Muzsnay, Zoltán %A Nagy, Péter T. %T Witt algebra and the curvature of the Heisenberg group %J Communications in Mathematics %D 2012 %P 33-40 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_2012__20_1_a4/ %G en %F COMIM_2012__20_1_a4