@Article{ 
  focgar,
  author = { Focardi, Matteo and Garroni, Adriana },
  title = { A $1$D phase field model for dislocations and a second order $\Gamma$limit },
  journal = { SIAM Multiscale Model. Simul. },
  year = { 2007 },
  volume = { 6 },
  number = { 4 },
  pages = { 1098-1124 },
  URL = { http://cvgmt.sns.it/paper/325/ },
  note = { cvgmt preprint}
}