@Misc{ 
  ambser07,
  author = { Ambrosio, Luigi and Serfaty, Sylvia },
  title = { A gradient flow approach to an evolution problem arising in superconductivity },
  journal = {  },
  year = { 2007 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1517/ },
  note = { cvgmt preprint}
}