@inproceedings{inproceedings6107b6a7,
title   = {A better approximation ratio and an IP formulation for a sensor cover problem},
author = {Barbosa, Rafael da Ponte and Wakabayashi, Yoshiko},
year = {2012},
doi = {10.1007/978-3-642-29344-3_5},
publisher = {Springer},
booktitle   = {Latin American Theoretical Informatics Symposium - LATIN}
}