@Article{ 
  ambmai09,
  author = { Ambrosio, Luigi and Mainini, Edoardo },
  title = { Infinite-dimensional porous media equations and optimal transportation },
  journal = { J. Evol. Equ. },
  year = { 2010 },
  volume = { 10 },
  pages = { 217-246 },
  URL = { http://cvgmt.sns.it/paper/1525/ },
  note = { cvgmt preprint}
}