@Misc{ 
  Muc23,
  author = { Mucci, Domenico },
  title = { A relaxation result for a second order energy of mappings into the sphere },
  journal = {  },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5935/ },
  note = { cvgmt preprint}
}