Hrudkina, N., Aliieva, L., Abhari, P., Kuznetsov, M. and Shevtsov, S. (2019) “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”, Eastern-European Journal of Enterprise Technologies, 2(7 (98), pp. 49–57. doi: 10.15587/1729-4061.2019.160585.