@book{zu221524,
           title = {??????? ? ??????? ???????. ????? 1: ??????? ??????????? ???????????},
          author = {?. ?. ???? and ?. ?. ???????? and ?. ?. ??????? and ?. ?. ????????? and ?. ?. ???? and ?. ?. ????????},
       publisher = {?. : ??????????},
            year = {2013},
             url = {http://eprints.zu.edu.ua/21524/}
}