??? ??? ??????? ???? ?????????? ????? ?? ?? ??? ???? ????? ????? ??, ?????? ??? ???? ??? ???? ???? ??????? ???? ????? ????? ???? ??? ??? ????? 2000 ???? ????? ???? ??? ??? ?? ???????? ??? ??? ??? ??? ???? ????? ?? ?? ??? ???? ????? ????? ???? ????? ??? [1] ???? ???? ????? ???? ???? ??????? ????? ???? ??? ???-????? ??? ??? ????, ??? ?????? ??? ?????? ???? ?????? ??? ????? ???????? ?? ????? ???? ???? ???? ???? ???? ??? [2]
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