S.А. Babunko – Ph.D. (Eng.), Associate Professor, Head of Laboratory,

JSC SPE «Salut-27» (Nizhny Novgorod)

E-mail: babunkosa@salut27.ru

Yu.G. Belov – Dr.Sc. (Eng.), Professor,

Nizhny Novgorod State Technical University n.a. R.E. Alekseev

E-mail: bel266@nntu.ru