@inproceedings{zu222499,
       booktitle = {???????? ???????? ???? ??????????? ???},
           title = {??????????? ????????? ??? ????????????-?????????????? ?????????? ?????},
          author = {?. ?. ????????? and ?. ?. ??? and ?. ?. ????????},
            year = {1971},
           pages = {249--252},
             url = {http://eprints.zu.edu.ua/22499/}
}