@article{zu230834, title = {?????????? ??????????? ??????????? ?????????????? ????? ?????????? ????? ? ????????????? ????????????? ??????????}, author = {??????? ????????? and ?????? ?????????}, year = {2020}, journal = {?????? ? ???????? ???????? ????????? ???}, url = {http://eprints.zu.edu.ua/30834/} }