Lyashuk, O., Y. Pyndus, I. Lutsiv, Y. Vovk, L. Poberezhna, O. Tretiakov, and R. Zolotyy. “Fracture Cause Analysis of the extruder’s Shaft and Geometry Optimization of the Spline”. Journal of Mechanical Engineering and Sciences, vol. 13, no. 1, Mar. 2019, pp. 4449-60, doi:10.15282/jmes.13.1.2019.08.0378.