@Article{ 
  DeLSpa13a,
  author = { De Lellis, Camillo and Spadaro, Emanuele },
  title = { Regularity of area-minimizing currents II: center manifold },
  journal = { Ann. of Math. (2)  },
  year = { 2016 },
  volume = { 183 },
  pages = { 499–575 },
  URL = { http://cvgmt.sns.it/paper/2181/ },
  note = { cvgmt preprint}
}