@Misc{ 
  beldemprea,
  author = { Bellettini, Giovanni and De Masi, Anna and Presutti, Errico },
  title = { Energy levels of critical points of a nonlocal functional },
  journal = { J. Math. Phys. },
  year = { 2004 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/188/ },
  note = { cvgmt preprint}
}