@Article{ 
  Riz16,
  author = { Rizzi, Luca },
  title = { Measure contraction properties of Carnot groups },
  journal = { Calculus of Variations and PDEs },
  year = { 2016 },
  doi = { 10.1007/s00526-016-1002-y },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2945/ },
  note = { cvgmt preprint}
}