1. Davydov Ya.S., 1950. Ininvolute engagement. – M., “Machgiz”, 121 p.
2. Korostelev L.V., 1964. Kinematic indices of space engagements loading capacity. – Izvestiya vuzov., Machine-building, №10, p. 15-21.
3. Kudryavzev V.N., Derzhavzev Yu.A., Gluchar E.G. 1971. Structures and calculation of gear reduction units. Reference book, edited by Kudryavzev V.N., M. - L., “Machine-building”, 1971, 328 p.
4. Litvin F.L. 1968. Theory of teeth engagement. – M., Nauka, 584 p.
5. Tepinkichnev V.K. 1973. Metal cutting machine-tools. M., “Machine-building”, 471 p.