@Article{ 
  jerlor08,
  author = { Jerrard, Robert L. and Lorent, Andrew },
  title = { On multiwell Liouville theorems in higher dimension },
  journal = { Advances in Calculus of Variations },
  year = { 2013 },
  volume = { 6 },
  pages = { 247-298 },
  URL = { http://cvgmt.sns.it/paper/1455/ },
  note = { cvgmt preprint}
}