Irgashev A, Ishmuratov X.K , Ishmuratova K.X., Irgashev B.A. “ Estimation of the Size of Abrasive Particles Involved in the Wear Process of Gear Teeth”. International Journal of Advanced Science and Technology, Vol. 29, no. 11s, June 2020, pp. 1917 -30, https://sersc.org/journals/index.php/IJAST/article/view/21854.