@Article{ lis07, author = { Lisini, Stefano }, title = { Nonlinear diffusion equations with variable coefficients as gradient flows in Wasserstein spaces }, journal = { ESAIM Control Optim. Calc. Var. }, year = { 2009 }, volume = { 15 }, pages = { 712-740 }, URL = { http://cvgmt.sns.it/paper/1116/ }, note = { cvgmt preprint} }