@Misc{ 
  monmor05,
  author = { Monti, Roberto and Morbidelli, Daniele },
  title = { Levi umbilical surfaces in complex space },
  journal = { Journal fuer die Reine und Angewandte Mathematik },
  year = { 2006 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1208/ },
  note = { cvgmt preprint}
}