@Article{ CesNovVal12, author = { Cesaroni, Annalisa and Novaga, Matteo and Valdinoci, Enrico }, title = { A symmetry result for the Ornstein-Uhlenbeck operator }, journal = { Discrete Contin. Dyn. Syst. A }, year = { 2014 }, volume = { 34 }, number = { 6 }, pages = { 2451-2467 }, URL = { http://cvgmt.sns.it/paper/1815/ }, note = { cvgmt preprint} }