Ogorodnikov, V. A., and I. Yu. Kyrytsia. “Assessment of Metal Deformability at Cold Forming of Internal Spline Surfaces”. Materials working by pressure, no. 1(50) (March 31, 2020): 136–146. Accessed August 28, 2025. http://omd.dgma.donetsk.ua/index.php/main/article/view/157.