@Misc{ 
  BocMon15,
  author = { Bochard, Pierre and Monteil, Antonin },
  title = { A necessary condition for lower semicontinuity of line energies },
  journal = {  },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2681/ },
  note = { cvgmt preprint}
}