@Article{ Mag12b, author = { Magnani, Valentino }, title = { Lipschitz estimates for convex functions with respect to vector fields }, journal = { Bruno Pini Mathematical Analysis Seminar }, year = { 2012 }, volume = { 1 }, pages = { 60-71 }, URL = { http://cvgmt.sns.it/paper/2518/ }, note = { cvgmt preprint} }