For citations:

Romanencko V.P., Fomin A.V., Illarionov G.P. METAL SHAPE CHANGE AT COMPACT AND HOLLOW BILLETS DEFORMATION BY MEANS OF UPSETTING PRESS STUDY WITH COMPUTER PROGRAM SPECIFI CATION COMPLEX DEFORM 3D MODELLING. Izvestiya. Ferrous Metallurgy. 2012;55(3):59-62. (In Russ.) https://doi.org/10.17073/0368-0797-2012-3-59-62