Authors
Ivano-Frankivsk National Technical University of Oil and Gas
Ivano-Frankivsk National Technical University of Oil and Gas
© 2020 Taras Romanyshyn, Liubomyr Romanyshyn, Michal Bembenek, Ihor Mokhnii, published by STE Group sp. z.o.o.
This work is licensed under the Creative Commons Attribution 4.0 License.