@inproceedings{zu231859,
       booktitle = {?????????? ?????????????: ??????? ??????????},
           month = {???????},
           title = {?????????? ????????????? ??? ???????? ????????????? ? ????????????? ????????-??????? e-olymp.com},
          author = {?. ?. ??????????},
            year = {2020},
           pages = {78--80},
             url = {http://eprints.zu.edu.ua/31859/}
}