@Misc{ 
  IduMai21,
  author = { Idu, Kennedy Obinna and Maiale, Francesco Paolo },
  title = { $C^{1,α}$-rectifiability in low codimension in Heisenberg groups },
  journal = {  },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5037/ },
  note = { cvgmt preprint}
}