@article{zu21300,
          number = {13},
           title = {????????????? ?????? ?????????? ???????? ??????? ???????? ???????? ? ?????? ?????????????? ????????},
          author = {?. ?. ????????},
       publisher = {???-?? ??? ??. ?.??????},
            year = {2003},
           pages = {57--60},
         journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/1300/},
        abstract = {????????? ????????????? ?????? ?????????? ???????? ??????? ???????? ???????? ? ?????? ???? ?????????????? ????????.}
}