%A ?. ?. ???????????
%A ?. ?. ???????
%A ?. ?. ?????
%A ?. ?. ?????????
%J The 4th International scientific and practical conference ?European scientific discussions? (February 26-28, 2021)
%T ????????? ??????? ???????????? ??????? ??????? ?????????????? ?????? ? ??????? ?????????? ?????????????? ? ?????? ? ????? ???????? ?????
%D 2021
%L zu233425