@article{zu25648,
           title = {??????????? ????????????? ????? ??????? ?? ?? ??'???? ??
??????????},
          author = {?. ?. ?????????},
            year = {2011},
           pages = {33--35},
         journal = {C?????? ???????? ?????????? ????????????? ???????????},
             url = {http://eprints.zu.edu.ua/5648/}
}