L. Ambrosio, M. Scienza: Locality of the perimeter in Carnot groups and chain rule (Submitted Paper) 2009 A. Bonfiglioli, E. Lanconelli, V. Magnani, M. Scienza: H-convex distributions in stratified groups Proc. Amer. Math. Soc. Vol. 141, N. 10, p. 3633-3638, 2013 V. Magnani, M. Scienza: Characterizations of differentiability for h-convex functions in stratified groups Ann. Scuola Norm. Sup. Pisa Cl. Sci. Vol. 13, p. 675-697, 2014 V. Magnani, M. Scienza: Regularity estimates for convex functions in Carnot-Carathéodory spaces Rev. Mat. Iberoam. Vol. 32, N. 3, p. 835-858, 2016