@article{zu25653,
           title = {???? ????????????? ?????????????? ??????? ? ??????????
??????},
          author = {?. ?. ??????},
            year = {2011},
           pages = {178--180},
         journal = {C?????? ???????? ?????????? ????????????? ???????????},
             url = {http://eprints.zu.edu.ua/5653/}
}