@article{zu223295,
           title = {????????? ???????? ?? ????? ???????},
          author = {?. ?. ?????},
            year = {2001},
           pages = {199--201},
         journal = {??????? ??????? ? ??????? : ????? XI-? ??????????? ???????? ???????????},
        keywords = {????????? ????????, ???????????? ??????????},
             url = {http://eprints.zu.edu.ua/23295/}
}