1. Theoretische Mashinenlehre;Grashof,1883
2. A Reassessment of Grashof's Criterion;Paul;J. Mech. Design, Trans. ASME,1979
3. Kinematic Synthesis of Linkages;Hartenberg,1964
4. Computing Mechanisms and Linkages;Svoboda,1965
5. A Finite, 3-Dimensional Atlas of 4-Bar Linkages;Davies;Mech. Mach. Theory,1979