@inproceedings{zu217413,
       booktitle = {????????? ??????? ??????????? ???? ?? ???????? ?? ??????????},
           title = {??????? ??????????? ?? ????? ???????? ?? ?? ??????},
          author = {?. ?. ??????? and ?. ?. ???????},
            year = {2012},
           pages = {107--112},
             url = {http://eprints.zu.edu.ua/17413/}
}