@misc{misc70755ee6,
title   = {A PTAS for the metric case of the minimum sum-requirement communication spanning tree problem},
author = {Ravelo, Santiago Valdés and Ferreira, Carlos Eduardo},
year = {2017},
doi = {10.1016/j.dam.2016.09.031},
booktitle   = {International Conference on Algorithms and Discrete Applied Mathematics - CALDAM 2015)}
}