@Misc{ 
  Can13,
  author = { Canevari, Giacomo },
  title = { Biaxiality in the asymptotic analysis of a 2-D Landau-de Gennes model
  for liquid crystals },
  journal = {  },
  year = { 2013 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5017/ },
  note = { cvgmt preprint}
}