@article{zu215786,
           title = {?? ????? ????????? ???????????? ??????????? ??????? ??????? ???????},
          author = {?. ?. ??????},
            year = {1977},
         journal = {???????? ?????? ??????? ????????? ?????????? ?????? ??????????????},
             url = {http://eprints.zu.edu.ua/15786/}
}