A. N. KIREEV
State Educational Institution of Higher Professional Education “Lugansk National University n.a. Vladimir Dal'” (SEI HPE “LNU n.a. V. Dal'”)
Russian Federation

Andrey N. KIREEV, Cand. Sci. (Eng.), Associate Professor

Lugansk, 91034

V. V. BYKADOROV
State Educational Institution of Higher Professional Education “Lugansk National University n.a. Vladimir Dal'” (SEI HPE “LNU n.a. V. Dal'”)
Russian Federation

Vadim V. BYKADOROV, Cand. Sci. (Eng.), Associate Professor, Head of the Department of railway transport

Lugansk, 91034

M. A. KIREEVA
State Educational Institution of Higher Professional Education “Lugansk National University n.a. Vladimir Dal'” (SEI HPE “LNU n.a. V. Dal'”)
Russian Federation

Margarita A. KIREEVA, Assistant

Lugansk, 91034