@book{zu220615,
           title = {??????????? ????????????. ??????? ?????: ? 3-? ?????. - ?. 2: ???????? ???? ??????? ??????????? ??????????},
          author = {?. ?. ??????},
       publisher = {?? ????},
            year = {2012},
             url = {http://eprints.zu.edu.ua/20615/}
}