Marcelo Benedito, Lehilton  Pedrosa, and Hugo  Rosado. 2019.
 A Constant-Factor Approximation for the Generalized Cable-Trench Problem. In <em>Anais do IV Encontro de Teoria da Computação</em>, julho 02, 2019, Belém, Brasil. SBC, Porto Alegre, Brasil. DOI: <a href="https://doi.org/10.5753/etc.2019.6399">https://doi.org/10.5753/etc.2019.6399</a>.