@Misc{ 
  BraYan16,
  author = { Brasco, Lorenzo and Squassina, Marco and Yang, Yang },
  title = { Global compactness results for nonlocal problems },
  journal = { Discrete Contin. Dyn. Syst. Ser. S },
  year = { 2016 },
  pages = { 33 },
  URL = { http://cvgmt.sns.it/paper/2959/ },
  note = { cvgmt preprint}
}