@Article{ FocMarSpa14, author = { Focardi, Matteo and Marchese, Andrea and Spadaro, Emanuele }, title = { Improved estimate of the singular set of Dir-minimizing Q-valued functions via an abstract regularity result }, journal = { Journal of Functional Analysis }, year = { 2015 }, volume = { 268 }, pages = { 3290--3325 }, URL = { http://cvgmt.sns.it/paper/2513/ }, note = { cvgmt preprint} }