@article{zu215777,
           title = {?????????? ??????????????? ???????? ??? ??????????????? ??????? ?????????? ?? ?????? ??????? ???????},
          author = {?. ?. ??????},
            year = {1987},
         journal = {?????????? ????????? ? ?????????? ???????},
             url = {http://eprints.zu.edu.ua/15777/}
}