Authors
V. Kharchenko
O.M.Beketov National University of Urban Economy, Kharkiv, Ukraine
S. Shpak
State Enterprise “Poltava Regional Research and Technical Center of Standardization, Metrology and Certification”, Poltava, Ukraine
O. Pitiakov
Poltava Polytechnic Professional College, Separated Structural Unit of National Technical University “Kharkiv Polytechnic Institute”, Ukraine
S. Kyslytsia
Poltava National Technical Yuri Kondratyuk University, Ukraine
Т. Sakhno
Poltava State Agrarian University, Poltava, Ukraine
H. Kozhushko
Poltava National Technical Yuri Kondratyuk University, Ukraine