@article{zu21209,
          number = {12},
           title = {??????????-????????????? ?????? ??????????? ??????????? ??????? ??? ?????????? ???????????? ??????????? ? ?????? ? ????? ?????? ???????? ??????},
          author = {?. ?. ?????},
       publisher = {???-?? ??? ??. ?.??????},
            year = {2003},
           pages = {249--252},
         journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/1209/},
        abstract = {????????????? ????? ?? ????????? ??????? ?????????? ???????????? ??????????? ? ??????.}
}