Ikramov U.A., Irgashev A. Term of oil replacement in gear transmissions. Friction and Wear, 1989, vol. 10, no. 3, pp. 545-554.

Dudas I. The theory and practice of worm gear drives. London, Penton press, 2000, 314 p.

Wojnarowski J., Onishchenko V. Tooth wear effects on spur gear dynamics. Mechanism and Machine Theory, Elsevier Science Ltd, Oxford, UK, February 2003, vol. 38, issue 2, pp. 161-178.

Ikramov U.A., Irgashev A., Makhkamov K.H. Calculation model to assess the wear resistance of gears by concentrations of wear products in oil. Friction and Wear, 2003, vol. 24, no. 6, pp. 620-625.

Pat. 20120000305 USA. Hybrid enveloping spiroid and worm gear. G. Kazkaz, M. Puppala, D. Richard; Illinois Tool Works. Published on 05-Jan-2012.

Wang Q.J. Encyclopedia of Tribology. Q.J. Wang, Y-W. Chung. Springer New York Heidelberg Dordrecht London, 2013, 413 p.

Gorlenko O.A., Makarov G.N., Shnyrikov I.O. Increasing the contact endurance of the teeth of spur gear drives. Friction and lubrication in machines and mechanisms, 2014, no. 6, pp. 25-27.

Irgashev A. Assessment of wear resistance of rolling friction units working in abrasive environment. Tashkent, Tashkent State Technical University, 1996, 131 p.

Ikramov U., Makhkamov K., Irgashev A. Method of choosing a material for friction knots, working in the presence of abrasive particles in the gap. Proceedings of the II International Conference “Wear of machines by particles”, Prague, 1987, pp. 6-45.

Ikramov U.A., Irgashev A. About a condition of the theory of abrasive wear and some aspects of calculation of gear-wear. Technical sciences. Tashkent, 1995, no. 1-4, pp. 111-121.

Irgashev A. The choice of gearing module of gears by strength and wear resistance conditions. Materials of the International Conference “Resource- and energy-saving, environmentally friendly composite materials”. Tashkent, 2013, September 19-21, pp. 386-388.

Development of methodology of theoretical estimation of parameters and duration of wear testing of gear. Materials Report on research work. Development of scientific bases of increasing wear resistance of gear drives of units of mobile machines and industrial equipment (intermediate). Tashkent, Tashkent State Technical University, 2014, 86 p.

Development of methods to improve the wear resistance of gears. Report on research work. Development of scientific foundations to improve the wear resistance of gears of units of mobile machines and industrial equipment. Tashkent, Tashkent State Technical University, 2015, 94 p.

Irgashev A. Methodological bases of increasing wear resistance of gears of heavily loaded gear transmissions of machine units.- D. Technical Sciences, Tashkent, 2005, 244 p.

Irgashev A., Irgashev B.A. Wear resistance of gears. Tashkent, Tashkent State Technical University, 2013, 165 p.

Shaabidov Sh.A., Irgashev A., Mirzaev K.K. Increasing the operational properties of the surface layers of machine parts. Monograph. Tashkent, Tashkent State Technical University, 2012, 176 p.

Irgashev A., Mirzaev N.N., Irgashev D.A. Assessment of wear of machine parts by concentrations of wear products in oil. Tashkent, Tashkent State Technical University, 2012, 160 p.

Ikramov U.A., Irgashev A. Analytical method of predicting the durability of gears by concentrations of wear products. Bulletin of the Tashkent State Technical University, Тashkent, 1994, no. 1-2, pp. 126-130.

Dubovik E.A. Features of wear of gear transmissions. Friction and lubrication in machines and mechanisms, 2015, no. 3, pp. 31-35.

Zamyatin A.Y., Zamyatin V.Y. Friction-fatigue properties of gears. Friction and Wear, 1999, vol. 1, no. 3, pp. 394-397.

Malikov A.A., Likhosherst V.V., Shalobaev E.V. Analysis and classification of the wear process of the gears. Reference book. Engineering Journal, 2011, no. 9, pp. 2-11.