@article{zu26630,
           title = {?????????-?????????? ??????????????? ? ????????? ??????????? ??????????
},
          author = {?. ?. ??????},
            year = {2007},
           pages = {169--172},
         journal = {??????? ? ?????? ?? ???? ? ??????????: ??????????? ??????????? ???????},
             url = {http://eprints.zu.edu.ua/6630/}
}