@conference {cLopez-Mendez07, title = {Multi-person 3D Tracking with Particle Filters on Voxels}, booktitle = {2007 International Conference on Acoustics, Speech and Signal Processing}, year = {2007}, author = {L{\'o}pez-M{\'e}ndez, A. and Cristian Canton-Ferrer and Casas, J.} }