@Misc{ 
  BraMag12,
  author = { Brasco, Lorenzo and Magnanini, Rolando },
  title = { The heart of a convex body },
  journal = { Springer INdAM Series },
  year = { 2012 },
  pages = { 15 },
  URL = { http://cvgmt.sns.it/paper/1772/ },
  note = { cvgmt preprint}
}