@Article{ 
  boubutfra01,
  author = { Bouchitté, Guy and Buttazzo, Giuseppe and Fragalà, Ilaria },
  title = { Bounds for the effective coefficients of homogenized low dimensional structures },
  journal = { J. Math. Pures Appl. },
  year = { 2002 },
  volume = { 81 },
  number = { 5 },
  pages = { 453-469 },
  URL = { http://cvgmt.sns.it/paper/384/ },
  note = { cvgmt preprint}
}