@article{zu2517,
          number = {4},
           title = {?????????? ????????????? ??????????? ? ???????????? ? ???????? ???????? ?????????? ??????},
          author = {?. ?. ??????? and ?. ?. ???????? and ?. ?. ??????????},
       publisher = {???-?? ??? ??. ?.??????},
            year = {1999},
           pages = {30--34},
         journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/517/},
        abstract = {? ??? ?????? ?????????? ????????? ?????? ?????????? ??????? ?????? ? ????????? ????????????? ??????????? ?? ????????????.}
}