??? ???? ??????????? ??????? ??? ???? ??? ????? ??? ???? ???????? ?????? ?????????????. ???????? ?????? ?????? ?????? ??????????? ??????????????? ???????????? 60 ???? ??? ?????????? ?? ?????? ??? ?? ???? ??? ??? ???? ???? ??????? ??????????????? ??? ??????????? ?????? ?????????? ?????? meta-???????????? ??? ????? ??????? ???:?????????????? ?? ?????