@article{zu225775,
          number = {5},
           month = {????????},
          author = {?. ?. ??????? and ?. ?. ???????????},
           title = {????? ??????? ???????????? ????????????-??????????? ??????? ?????????? ???????? ???????? ?? ??????-????????????? ??????????},
       publisher = {???-?? ?.?.??????, ???????},
         journal = {????????? ??????? ???????? ???????????},
           pages = {247--249},
            year = {2017},
             url = {http://eprints.zu.edu.ua/25775/}
}