A.V. Zhuravlev – Ph. D. (Eng.), Senior Research Scientist, Main Designer – Deputy General Director,  JSC SPE «PROTEK» (Voronezh)

E-mail: protek@protek-vrn.ru

V.G. Markin – Leading Engineer, JSC SPE «PROTEK» (Voronezh) E-mail: marvigs@mail.ru