@Article{ DeL16a, author = { De Lellis, Camillo }, title = { The masterpieces of John Forbes Nash Jr }, journal = { H. Holden and R. Piene (editors): The Abel Prize 2013–2017. Springer Verlag. }, year = { 2016 }, pages = { }, URL = { http://cvgmt.sns.it/paper/3081/ }, note = { cvgmt preprint} }