@article{zu216833,
          volume = {33},
          number = {2},
           title = {????????????????? ??????????: ??????????? ????????? ????????? ?????????? ? ????????????????},
          author = {?. ?. ?????? and ?. ?. ????????? and ?. ?. ?????????? and ?. ?. ?????? and ?. ?. ????????},
            year = {2011},
           pages = {171--174},
         journal = {?????????? ??????},
             url = {http://eprints.zu.edu.ua/16833/}
}