@Misc{ 
  BarCir17,
  author = { Bardi, Martino and Cirant, Marco },
  title = { Uniqueness of solutions in Mean Field Games with several populations and Neumann conditions },
  journal = { "PDE models for multi-agent phenomena",  P. Cardaliaguet, A. Porretta, F. Salvarani editors,  Springer INdAM Series },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3535/ },
  note = { cvgmt preprint}
}