M. R. Khokhla https://orcid.org/0000-0002-8990-5521 Ivan Franko National University of Lviv Ukraine
G. Ya. Kleveta https://orcid.org/0000-0002-2984-1060 Ivan Franko National University of Lviv Ukraine
Ya. P. Chajka Ivan Franko National University of Lviv Ukraine
M. I. Skybitska https://orcid.org/0000-0003-0085-6338 Ivan Franko National University of Lviv Ukraine
N. O. Sybirna https://orcid.org/0000-0002-9217-3931 Ivan Franko National University of Lviv Ukraine