Anishchenko, A. S., et al. “Approximation of the Contour of the Side Surface of the Semimanufactures With the Upsetting Using Deforming Flat Plates”. Materials Working by Pressure, no. 2(49), Dec. 2019, pp. 35-40, doi:10.37142/2076-2151/2019-2(49)35.