Authors
M. Polutrenko
Ivano-Frankivsk National Technical University of Oil and Gas,, Kiev, Ukraine
P. Maruschak
Ternopil Ivan Pul’uj National Technical University,, Kiev, Ukraine
A. Tymoshenko
Open International University of Human Development,, Kiev, Ukraine
A. Sorochak
Ternopil Ivan Pul’uj National Technical University,, Kiev, Ukraine
