@Misc{ 
  PalPol22,
  author = { Pallara, Diego and Polidoro, Sergio },
  title = { Mean value formulas for classical solutions to some degenerate elliptic equations in Carnot groups },
  journal = { Discrete Contin. Dyn. Syst. Ser. S },
  year = { 2022 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5606/ },
  note = { cvgmt preprint}
}