@Article{ DeLSz\13d, author = { De Lellis, Camillo and László Jr Székelyhidi, László Jr }, title = { The $h$-principle and the equations of fluid dynamics }, journal = { Bull. Amer. Math. Soc. }, year = { 2012 }, volume = { 49 }, number = { 3 }, pages = { 347-375 }, URL = { http://cvgmt.sns.it/paper/2189/ }, note = { cvgmt preprint} }