@article{zu215769,
           title = {??????????? ??????? ????????????, ???? ??????? ???????? ???? ???? ?????? ??????? ???????},
          author = {?. ?. ??????},
            year = {1990},
         journal = {?????????? ?????? ?????????????? ??????????????},
             url = {http://eprints.zu.edu.ua/15769/}
}