@article{AhmadL2013, title = {Multi-robot cooperative spherical-object tracking in 3D space based on particle filters}, author = {Ahmad, A and Lima, P}, journal = {Robotics and Autonomous Systems}, volume = {61}, number = {10}, pages = {1084--1093}, month = oct, year = {2013}, doi = {10.1016/j.robot.2012.12.008}, month_numeric = {10} }