1. Umarov A. A., Study of the issues of creating optimal control systems for cotton ginning equipment, Candidate of Technical Sciences Dissertation, Tashkent (2010)
2. Study on possibilities of scarring ways to reduce in the cotton cleaning process
3. Miroshnichenko G. I. Fundamentals of designing machines for primary processing of cotton, The Teacher, Tashkent (1998)
4. Jabborov G. J., Otametov T. U., Hamidov A., Technology of primary processing of seed cotton, The Teacher Tashkent (1987)