9Gosselin C, Angeles J. The Optimum Kinematic Design of a Planar Three - Degree - of- Freedom Parallel Manipulator[J]. ASME Journal of Mechanisms, Transmissions, and Automation in Design, 1988, 110 (1): 35-41.
10Tsai L W, Sameer Joshi. Kinematics and Optimization of a Spatial 3 - UPU Parallel Manipulator [J]. ASME Journal of Mechanical Design, 2000, 122 (2): 439-446.
6Jin Qiong, Yang Tingli. Synthesis and analysis of a group of 3- degree-of-freedom partially decoupled parallel manipulators [ J]. Journal of Mechanical Design, 2004, 126: 301 - 306.
7Li Weimin, Gao Feng, Zhang Jianjun. A three-DOF translational manipulator with decoupled geometry [ J ]. Robotica, 2005,23:805 - 808.
8Li Weimin, Gao Feng, Zhang J ianjun. R-CUBE, a decoupled parallel manipulator only with revolute joints [ J ]. Mechanism and Machine Theory, 2005, 40:467 - 473.