@article{zu213796,
          volume = {50},
          number = {5},
          author = {?. ?. ?????? and ?. ?. ????????},
           title = {????????-???????? ???????? ????? ??????????? ???????.},
       publisher = {??????????? ???????? ????},
         journal = {??????????? ???????????? ??????},
           pages = {712--723},
            year = {1998},
             url = {http://eprints.zu.edu.ua/13796/},
        abstract = {???????? ????????-??????? ??????? ??? ????? ??????????? ???????,??????? ?? ????? ????????? ???????? ??????????? ???????.}
}