@article{zu232168, title = {??? ??????????? ????????? ????????? ? ?????? ?????????? ??????????? ????}, author = {?. ?. ????????? and ?. ?. ??????????}, publisher = {Boston, USA}, year = {2021}, pages = {988}, journal = {Fundamental and applied research in the modern world}, url = {http://eprints.zu.edu.ua/32168/} }