@Article{ 
  acecrimuc09,
  author = { Acerbi, Emilio and Crippa, Gianluca and Mucci, Domenico },
  title = { A variational problem for couples of functions and multifunctions with interaction between leaves },
  journal = { ESAIM: Control, Optimisation and Calculus of Variations },
  year = { 2012 },
  doi = { 10.1051/cocv/2011195 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1091/ },
  note = { cvgmt preprint}
}