1. Rolling of Threads, Worms Splines and Teeth;Lapin,1986
2. Technologie des Gewindewalzens;Näser,1959
3. Theory of Gear Engagement;Litvin,1959
4. Theory of Helical Surfaces in the Design of Cutting Tools;Lyukshin,1968
5. Computing Mathematics with Examples and Problems;Koptchenova,1972