1. A History of Mechanical Inventions;Usher,1959
2. The Kinematics of Machinery;Reuleaux,1963
3. The creation of mechanism according to kinematic structure and function;Freudenstein;General Motors Research Report No. GMR-3073,1980
4. Some applications of graph theory to the structural analysis of mechanisms;Dobrjansky;ASME J. Eng. Ind.,1967
5. The stratified representation of mechanisms;Fang;Trends and Developments in Mechanisms, Machines, and Robotics ASME Pub. No. DE-Vol 15-1,1988