@article{zu213710,
           title = {??????????? ???????????? ??????????? ????????},
          author = {?. ?. ?????????},
       publisher = {???-?? ??? ????? ????? ??????},
            year = {2011},
           pages = {226--230},
         journal = {?????? ? ???????? ?????????? ????????? ???????? ?? ???????????? ??? : ??. ?????????? ???????????},
             url = {http://eprints.zu.edu.ua/13710/}
}