@Misc{ Lav17, author = { Lavenant, Hugo }, title = { Time-convexity of the entropy in the multiphasic formulation of the incompressible Euler equation }, journal = { Calculus of Variations and Partial Differential Equations }, year = { 2017 }, pages = { }, URL = { http://cvgmt.sns.it/paper/3312/ }, note = { cvgmt preprint} }