Improving the location of minisum facilities through network modification

@article{Berman1992ImprovingTL,
  title={Improving the location of minisum facilities through network modification},
  author={Oded Berman and Divinagracia I. Ingco and Amedeo R. Odoni},
  journal={Annals OR},
  year={1992},
  volume={40},
  pages={1-16}
}