N. N. Sergeev
Tula State Pedagogical University named after L. N. Tolstoy
Russian Federation

Nikolay N. Sergeev - Dr. of Sci. (Engineering), Professor.

125 Lenin str., Tula 300026.

V. V. Izvolsky
Tula State University
Russian Federation

Valeriy V. Izvolsky - Cand. of Sci. (Engineering), Associate Professor, Associate Professor of the Construction, Building Materials and Structures Department.

92 Lenin str., Tula 300012.

A. N. Sergeev
Tula State Pedagogical University named after L. N. Tolstoy
Russian Federation

Aleksandr N. Sergeev - Cand. of Sci. (Pedagogical) Sciences, Professor.

125 Lenin str., Tula 300026.

S. N. Kutepov
Tula State University
Russian Federation

Sergey N. Kutepov - Cand. of Sci. (Pedagogical).

92 Lenin str., Tula 300012.

A. E. Gvozdev
Tula State Pedagogical University named after L. N. Tolstoy
Russian Federation

Aleksandr E. Gvozdev - Dr. of Sci. (Engineering), Professor.

125 Lenin str., Tula 300026.

E. V. Ageeva
50 Let Oktyabrya str. 94, Kursk 305040.
Russian Federation

Ekaterina V. Ageeva - Cand. of Sci. (Engineering), Associate Professor.

50 Let Oktyabrya str. 94, Kursk 305040.

D. S. Klementyev
Tula State Pedagogical University named after L. N. Tolstoy
Russian Federation

Denis S. Klement'yev – Undergraguate.

125 Lenin str., Tula 300026.

O. V. Kruglyakov
50 Let Oktyabrya str. 94, Kursk 305040.
Russian Federation

Oleg V. Kruglyakov - Post-Grаduate Student.

50 Let Oktyabrya str. 94, Kursk 305040.