%A ?. ?. ????????? %A ?. ?. ??????? %J ?he 11th International scientific and practical conference. SPC ?Sci-conf.com.ua? %T ???????? ?????? ?? ??????? ??????????????-???????? ??????? ?? ????????? ?????????? ?? ?????????? ???????????? ???????? ? ??????? %D 2021 %I Scientific Publishing Center ?Sci-conf.com.ua? %P 519-525 %L zu234674