%A ?. ?. ????? %A ?. ?. ????????? %J Results of modern scientific research and development. Proceedings of the 8th International scientific and practical conference %T ??????????? ????????????? ???????? ?????????? ????????? ?? ???????????? ????????? %X ?????????? ??????????? ??????????? ?????????? ????????? ?????????, ??? ???? ???????? ???????? ????? ??????????? ? ?????????. ????? ????????? ???????????????? ?????????????, ??? ? ???????????? ? ?????? ?????? ??????? ???????????? ???????. ?????????? ? ????????? ?????? ???????????? ????????? ???????????????, ?? ????? ?? ????? ?????????? ??? ??????????? ?? ???????? ??????????? ??????, ??? ? ??????????? ???????? ?????????? ?????????. %K ???????? ?????????, ?????, ????????? ????????? ? ??????????? ????????? %P 332-335 %D 2021 %I Barca Academy Publishing. Madrid, Spain. %L zu233289