1. Modern Gear Production;Watson,1970
2. Analytical Mechanics of Gears;Buckingham,1949
3. Differential Geometry;Khanna,1990
4. Symbolic and computational conjugate geometry of a generic cutter and machine tool assembly;Dhande;Journal of Design and Manufacturing,1994
5. F.L. Litvin, Theory of Gearing, 1212, NASA Reference Publication, 1989.