@article{zu226671,
           title = {????? ?????????? ? ????},
          author = {?. ?????????? and ?. ?. ?????},
            year = {2017},
           pages = {169--171},
         journal = {????????? ?? ?????????? ?????????????? ????????-??????????? ???????????},
             url = {http://eprints.zu.edu.ua/26671/}
}