@Article{ 
  ansbra00,
  author = { Ansini, Nadia and Braides, Andrea },
  title = { Asymptotic analysis of periodically-perforated nonlinear media },
  journal = { J. Math. Pures Appl. },
  year = { 2002 },
  volume = { 81 },
  pages = { 439-451 },
  URL = { http://cvgmt.sns.it/paper/1588/ },
  note = { cvgmt preprint}
}