Yu. I. Luzhavin - Post-graduate Student, Head of Sector, JSC - POLYOT Research & Production Company?, Nizhny Novgorod. E-mail: luzhavin@rambler.ru
V. P. Khranilov - Dr.Sc. (Eng.), Professor of "Computer technologies in design and manufacturing" Department, Deputy Director, IRIT Nizhny Novgorod State Technical University n.a. R.E. Alekseev. E-mail: hranilov@nntu.nnov.ru