@article{zu21158,
          number = {3},
           title = {?????????????-???????? ??????????? ?????????? ?????? ??????????? ???????????},
          author = {?. ?. ??????},
            year = {1999},
           pages = {156--160},
         journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/1158/},
        abstract = {??????????????? ????????? ??? ?????????????-???????? ???????????? ??????? ??????????? ?????? ??????????? ???????????.}
}