@article{zu26491,
           title = {????????? ??????????? ????????????? ??????????? ???? ????? ?u2+ ? ??????????? ????????? ?????
},
          author = {?. ?. ????????? and ?. ?. ????????},
            year = {2010},
           pages = {19--20},
         journal = {??????????? ??????? ??????? 2010},
             url = {http://eprints.zu.edu.ua/6491/}
}