@Article{ 
  CriBou20,
  author = { Bourne, David and Cristoferi, Riccardo },
  title = { Asymptotic optimality of the triangular lattice for a class of optimal location problems },
  journal = { Communications in Mathematical Physics },
  year = { 2021 },
  doi = { https://doi.org/10.1007/s00220-021-04216-6 },
  volume = { 387 },
  pages = { 1549-1602 },
  URL = { http://cvgmt.sns.it/paper/4965/ },
  note = { cvgmt preprint}
}