Chi Xu Shiqi Li Junfeng Wang Tao Peng Ming Xie Occlusion Handling in Augmented Reality System for Human-Assisted Assembly Task. 121-130 2008 ICIRA (2) http://dx.doi.org/10.1007/978-3-540-88518-4_14 conf/icira/2008-2 db/conf/icira/icira2008-2.html#XuLWPX08