%A ?. ?. ?????? %A ?. ?. ????????? %J Modern science: problems and innovations. %T ??????????? ????????? ??? ? ????? ?? ?????????? ?????? ? ???????????? ?? ? ???????? ???????? %X Modern science: problems and innovations. Abstracts of X international scientific and practical conference. December 13-15,2020 %D 2020 %K ????????? ?????, ??????? ???????, ???????? ????????? %L zu232007