@Article{ Gig12b, author = { Gigli, Nicola and Mantegazza, Carlo }, title = { A Flow Tangent to the Ricci Flow via Heat Kernels and Mass Transport }, journal = { Advances in Math. }, year = { 2014 }, volume = { 250 }, pages = { 74-104 }, URL = { http://cvgmt.sns.it/paper/1900/ }, note = { cvgmt preprint} }