@Misc{ 
  Far15a,
  author = { Farina, Alberto },
  title = { Symmetry of components, Liouville-type theorems and classification results for some nonlinear elliptic systems },
  journal = { DCDS-A (Discrete and Continuous Dynamical Systems - Series A) },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2897/ },
  note = { cvgmt preprint}
}