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???? ??? ????? ???? ????? ? 3·4??(7~9?)? ????? ??? ???? 3800??? ????? ??. ????? ?? ???? ??? ????? ??? ? ?? 1988? ?????? ?? ??? ?? 13??? ????.
????? ??? ???? ?? ???? ???? ??? ??? ??? ?? ???? ??? ?? ??? ????.
????? 22? ?? ??? ??????? ??????(IR)? ?? 3·4??? △?? 7?2000?? △??? 4200?? △???? 182??? ??? ???? ????.
??? ???(8??)?? 8000??, ????? 5800??? ???. ?? ? ?????? ?? 1?2900??? ??? ? ??? ??? ??? D? ??? ???? ????? ??? ????? 26% ??? ??? 3800??? ????? ??.
????? “?? 7???? ?? ???? ????? ??? ?? ?? ?? ??? ??? ???? ?? ??? ? ??? ??? ???” ? 4·4???? ??? ???? ??? ??? ??? ? ??? ????.
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