Kh. Ye. Furtak https://orcid.org/0000-0003-0425-9223 Ivan Franko National University of Lviv Ukraine
H. Ya. Hachkova https://orcid.org/0000-0002-2984-1060 Ivan Franko National University of Lviv Ukraine
N. O. Sybirna https://orcid.org/0000-0002-9217-3931 Ivan Franko National University of Lviv Ukraine