@article{zu213852,
           title = {????????, ????? ?? ???? ??????????? ?????? ????????? ? ?????? ??????????? ???????},
          author = {?. ????????? and ?. ?. ????????},
       publisher = {???-?? ??? ??. ?. ??????},
            year = {2014},
           pages = {157--160},
         journal = {???????????? ????? ?????? ? ??????? ?? ?? ????????},
             url = {http://eprints.zu.edu.ua/13852/}
}