@Article{ 
  deatro00,
  author = { De Arcangelis, Riccardo and Trombetti, Cristina },
  title = { On the Lavrentieff Phenomenon for Some Classes of Dirichlet Minimum Problems },
  journal = { Journal of Convex Analysis },
  year = { 2000 },
  volume = { 7 },
  number = { 2 },
  pages = { 271-297 },
  URL = { http://cvgmt.sns.it/paper/1610/ },
  note = { cvgmt preprint}
}