@Misc{ 
  ChePet23,
  author = { Cherkashin, Danila and Petrov, Fedor },
  title = { Branching points in the planar Gilbert--Steiner problem have degree 3 },
  journal = {  },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6203/ },
  note = { cvgmt preprint}
}