A Particle Swarm Optimization Algorithm for Topology Control in Wireless Sensor Networks. - Robert Cristian Abreu; José Elias Claudio Arroyo (SCCC, 2011)

An application of ILS heuristic to Periodic Vehicle Routing Problem with heterogeneous fleet and fixed costs. - Robert Cristian Abreu; José Elias Claudio Arroyo (CLEI, 2015)