@article{zu229655, month = {????????}, title = {????????? ????????? ? ?????????}, author = {?. ?. ??????}, publisher = {??? ??. ?. ??????}, year = {2019}, pages = {183--185}, journal = {????????? ???????? ????????????? ????????? (??????? ???????? ?????)}, url = {http://eprints.zu.edu.ua/29655/} }