@article{zu232292, title = {??????????? ????????????? ?? ?????? ?????????????? ??????????? ???????}, author = {?. ?. ??????? and ?. ???????}, publisher = {??? ??. ?.??????}, year = {2021}, pages = {20--25}, journal = {?????? ? ???????? ?????????? ??????}, url = {http://eprints.zu.edu.ua/32292/} }