@unpublished{zu27531,
           title = {???????? ???????? ???????????????? ???????? ? ?????},
          author = {?. ?. ??????? and ?. ?. ???????? and ?. ?. ????},
            year = {2012},
             url = {http://eprints.zu.edu.ua/7531/},
        abstract = {????????? ??? ???????????? ?????? ?? ???????? ???????? ??????}
}