@article{zu25455,
           title = {???? ???????? ??????????? ?? ??????? ??????? ?? ???????? (???????????????? ?????)},
          author = {????????? ???????},
       publisher = {???-?? ??? ??. ?.??????},
            year = {2011},
           pages = {257--260},
         journal = {????????? IV ?????????? ??????????? ????????-  ??????????? ???????????, ??????????? 10-????? ??????????   ??????????? ?????????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/5455/}
}