1. Oberg, E., Jones, F.D. and Horton, H. L. (1988) Machinery’s Handbook, 23th Edition, Industrial Press, New York.
2. Stoianovici, D. and Kavoussi, L. (2006) Ball-Worm Transmission. US Patent No. 7051610.
3. Koçak, S. (2017) Innovative Design for a Ball Worm Gear Mechanism. International Journal of Engineering and Technology, 3, 230-234.
4. A Study on Zero-backlash Reduction Mechanism
5. Design and Assessment of an Antibacklash Single Roller Enveloping Hourglass Worm Gear