Authors
L. Poberezhny
Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine
A. Stanetsky
Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine
G. Grytsuliak
Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine
M. Kosmii
King Danylo University, Ukraine
A. Hrytsanchuk
Ivano-Frankivsk National Technical University of Oil and Gas, Ukraine
