@misc{zu233787,
           title = {????????? ???????????? ???? ??????????? ?????????? ???????????????? ???????? ??? ????????? ?????? ?? ??????? ???? ???????? ????????????? 231 ?????????? ???????},
          author = {?. ?. ???????? and ?. ?. ?????? and ?. ?. ??????},
            year = {2020},
             url = {http://eprints.zu.edu.ua/33787/}
}