@Article{ 
  BouPelThe13,
  author = { Bourne, David and Peletier, Mark and Theil, Florian },
  title = { Optimality of the triangular lattice for a particle system with Wasserstein interaction },
  journal = { Communications in Mathematical Physics },
  year = { 2014 },
  doi = { 10.1007/s00220-014-1965-5 },
  volume = { 329 },
  number = { 1 },
  pages = { 117-140 },
  URL = { http://cvgmt.sns.it/paper/2063/ },
  note = { cvgmt preprint}
}