@Misc{ 
  Ler15a,
  author = { Lerario, Antonio },
  title = { Intrinisic volumes of sets of singular matrices and applications to real algebraic geometry },
  journal = {  },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2887/ },
  note = { cvgmt preprint}
}