%A ?. ?. ?????
%J Topical issues of the development of modern science. Abstracts of the 9th International scientific and practical conference. Publishing House ?ACCENT?.
%T ?????????????? ????????? ????? ??????-?????? ? ???????? ??????????????? ??????
%X ? ?????? ????????????? ??????? ?????? ????????? ????????? ????? ??????-??????. ??????? ????????????? ???????? ?????? ??????? ???????, ?????????-??????????? ??????? ?????????????????. ?????????? ????? ???????? ??????-??????? ?? ????? ?????????? ?????????? ????????? ?????. ????? ??????????? ?? ??????? ???????????? ?????? ??????-??????? ?? ??????????? ????????? ???????? ???? ?????????????.
%K ?????-?????, ?????? ??????, ????????-??????????? ???????, ?????? ????????????
%P 859-865
%D 2020
%I Sofia, Bulgaria
%L zu231095