Authors
Ivano-Frankivsk National Technical University of Oil and Gas
Ivano-Frankivsk National Technical University of Oil and Gas
© 2020 Oleksandr Ivanov, Pavlo Prysyazhnyuk, Dmytro Lutsak, Oleh Matviienkiv, Vicktor Aulin, published by STE Group sp. z.o.o.
This work is licensed under the Creative Commons Attribution 4.0 License.