@unpublished{zu23849,
           month = {???????},
           title = {??????????? ???????????? ????????????? ??????? ??? ????????? ???????? ???????????? ???????? ????????},
          author = {????? ?????????? ??????},
            year = {2009},
             url = {http://eprints.zu.edu.ua/3849/},
        abstract = {??????? ?????? 53 ????? ?????? ?.?}
}