@article{zu224720, volume = {2}, month = {????????}, author = {?. ?. ??????}, title = {???????????? ??????????? ?? ????? ?????????? ?????? ???????? ??????}, publisher = {??-? ?????????}, journal = {??????? ?????????? ?????????????? ???????-?????????? ??????????? ????????????? ?????????? ? ???????? ???????}, pages = {228--234}, year = {2017}, url = {http://eprints.zu.edu.ua/24720/} }