@book{zu218052,
           title = {??????? ??????????},
          author = {?. ?. ???????? and ?. ?. ???????? and ?. ?. ??????? and ?. ?. ????????? and ?. ?. ????????? and ?. ?. ??????},
       publisher = {???-?? ??? ????? ????? ??????},
            year = {1999},
             url = {http://eprints.zu.edu.ua/18052/},
        abstract = {?????????? ????????}
}