@Article{ 
  SerTil12a,
  author = { Serra, Enrico and Tilli, Paolo },
  title = { Monotonicity constraints and supercritical Neumann problems },
  journal = { Ann. Inst. H. Poincaré Anal. Non Linéaire },
  year = { 2011 },
  volume = { 28 },
  number = { 1 },
  pages = { 63-74 },
  URL = { http://cvgmt.sns.it/paper/2034/ },
  note = { cvgmt preprint}
}