@Article{ 
  Arr16,
  author = { Arroyo-Rabasa, Adolfo },
  title = { Regularity for free interface variational problems in a general class of gradients },
  journal = { Calculus of Variations and Partial Differential Equations },
  year = { 2016 },
  doi = { 10.1007/s00526-016-1085-5 },
  volume = { 55 },
  number = { 6 },
  pages = { 154-197 },
  URL = { http://cvgmt.sns.it/paper/3298/ },
  note = { cvgmt preprint}
}