@Misc{ BraCar12, author = { Brasco, Lorenzo and Carlier, Guillaume }, title = { On certain anisotropic elliptic equations arising in congested optimal transport: local gradient bounds }, journal = { Adv. Calc. Var. }, year = { 2013 }, pages = { 21 }, URL = { http://cvgmt.sns.it/paper/1890/ }, note = { cvgmt preprint} }