@Article{ 
  garponpri04,
  author = { Garroni, Adriana and Ponsiglione, Marcello and Prinari, Francesca },
  title = { From $1$-homogeneous supremal functionals to difference quotients: relaxation and Gamma-convergence },
  journal = { Calc. Var. },
  year = { 2006 },
  volume = { 27 },
  pages = { 397-420 },
  URL = { http://cvgmt.sns.it/paper/206/ },
  note = { cvgmt preprint}
}