@article{zu21531,
          number = {15},
           title = {????????? ?????????? ??????????? ????????????????? ??????},
          author = {?. ?. ??????},
            year = {2004},
           pages = {139--141},
         journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/1531/},
        abstract = {????????????? ??????????? ?????????? ????? ????????? ????, ??? ???????? ?? ??????????? ?????? ???????????? ??????.}
}