@inproceedings{Yero2019,
  title         = {Distance-based vertex identification in graphs: the outer multiset dimension},
  author        = {Gil-Pons, Reynaldo and Ram\'irez-Cruz, Yunior and Trujillo-Rasua, Rolando and Yero, Ismael G.},
  year          = {2019},
  booktitle     = {Applied Mathematics and Computation},
  doi           = {10.1016/j.amc.2019.124612}
}