Qining Wang Hua Li Feifei Huang Guangming Xie Long Wang Collaborative Localization Based Formation Control of Multiple Quadruped Robots. 649-659 2008 RoboCup http://dx.doi.org/10.1007/978-3-642-02921-9_56 conf/robocup/2008 db/conf/robocup/robocup2008.html#WangLHXW08