%A ?. ?. ????????? %A ?. ?. ???????? %J XIX International Scientific and Practical Conference International Trends in Science and Technology: ??. ??? ??????. ????.-?????. ????., 29 ????????? 2019 ?. %T ????????????? ???????????? ?????????????????????? ??????????? %D 2019 %I ??????? %P 39-40 %L zu239107