@conference {MASS2011,
	title = {An Effective Metaheuristic Approach to Node Localization in Wireless Sensor Networks},
	booktitle = {IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS)},
	year = {2011},
	author = {Massimo Vecchio and R. L{\'o}pez-Valcarce and Francesco Marcelloni}
}
