N. Hrudkina, L. Aliieva, P. Abhari, M. Kuznetsov, and S. Shevtsov, “Derivation of engineering formulas in order to calculate energy-power parameters and a shape change in a semi-finished product in the process of combined extrusion”, EEJET, vol. 2, no. 7 (98), pp. 49–57, Mar. 2019.