@book{zu232339,
           title = {????????? ???????????? ? ????????? ?????????? ?????????? ???????? ? ?????????? ??????? ??? ??????????? ?????? ?????????? ????? ?????? ????????????? 231 ?????????? ??????? ??????? (??????????????) ?????},
          author = {?. ?. ???????????-?????????},
       publisher = {???-?? ??? ??. ?. ??????},
            year = {2021},
             url = {http://eprints.zu.edu.ua/32339/}
}