numerical simulations. cold drawing. tube formingBella, Peter Numerical simulation of cold drawing of steel tubes with straight internal rifling / aut. Peter Bella, Roman Ďurčík, Martin Ridzoň, Ľudovít Parilák. Ďurčík, Roman. Ridzoň, Martin. Parilák, Ľudovít In: Procedia Manufacturing. -- ISSN 2351-9789 International Conference on Metal Forming.. -- Vol. 15, (2018), s. 320-326.