@Misc{ 
  DraLiuZha24,
  author = { Dragoni, Federica and Liu, Qing and Zhang, Ye },
  title = { Horizontal semiconcavity for the square of Carnot-Carath\'eodory distance on ideal Carnot groups and applications to Hamilton-Jacobi equations },
  journal = {  },
  year = { 2024 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6451/ },
  note = { cvgmt preprint}
}