Диха, О.В., and А.А. Вичавка. “Dykha O.V., Vychavka A.A. Calculation Estimation of Wear Sliding Directing With Lubricating Grooves of Triangular Profile”. Problems of Tribology 81, no. 3 (November 15, 2016): 98. Accessed May 26, 2022. http://tribology.khnu.km.ua/index.php/ProbTrib/article/view/92.