@Article{ 
  alvbarmara,
  author = { Alvarez, Olivier and Bardi, Martino and Marchi, Claudio },
  title = { Multiscale singular perturbations and homogenization of optimal control problems },
  journal = { Series on Advances in Mathematics for Applied Sciences },
  year = { 2008 },
  volume = { 76 },
  pages = { 1-27 },
  URL = { http://cvgmt.sns.it/paper/1080/ },
  note = { cvgmt preprint}
}