Panfeng Huang Gang Liu Jianping Yuan Yangsheng Xu Multi-Objective Optimal Trajectory Planning of Space Robot Using Particle Swarm Optimization. 171-179 2008 ISNN (2) http://dx.doi.org/10.1007/978-3-540-87734-9_20 conf/isnn/2008-2 db/conf/isnn/isnn2008-2.html#HuangLYX08