@Article{ 
  BecFre12,
  author = { Beck, Lisa and Frehse, Jens },
  title = { Regular and irregular solutions for a class of elliptic systems in the critical dimension },
  journal = { NoDEA Nonlinear Differential Equations Appl. },
  year = { 2013 },
  doi = { 10.1007/s00030-012-0191-0 },
  volume = { 20 },
  number = { 3 },
  pages = { 943-976 },
  URL = { http://cvgmt.sns.it/paper/1851/ },
  note = { cvgmt preprint}
}