**Author details**

Dmytro Vakulenko1 \*, Liudmyla Vakulenko2 , Leonid Hryshchuk1 and Lesya Sas1


\*Address all correspondence to: dmitro\_v@ukr.net

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
