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??? ??? ??????? ????? ?? ?? ?????? ????? ????? ???γ? 1, 2? ??? ????? ??? ?????? ?? ???? o?? ??????? ???????? ???γ? ??? ??????? ???? ?????? ???????. ??? ????? ?????? ???????? ?????? ?????.

?????? ???? ?????? ?? 12?????? ??????? ?????? ????????? ??????? ?????? ?? ???? ????, ?????? ??????? ???? 24???? ?¿? ???? ???? ????.

???? ?????? ??u?? ???????? ????? ???? ???. ?????? ?? ???????? ??????? ??? ??????? ??? ??ο? ???? ???? ???? ???? ?????븦 ??o??? ?????? ????? ?????? ???????? ????????.

???????? ??????? ???γ? 1, 2??? ???????? ?? ?? ???? ????? ????? ?????? ???????. ?????? 4?? 4?? ??????? ?α? ??????? ????? ???????? ??? ??????? ???? ?????? ?????θ? ?????? ????? 117??? ????? ?????. ??y??? ?????? ???? ???????? ???????????? ?а? ???? ?????? ??? ????? ???????.

???????? ?????? ???? ???? ??? ???? ?? ?? ?????? ??? ????? ??????? ?? ?? ?????? ????? ???? ???????? ???? ??? ?????? ????? ???? ?????? ???? ??? ??????? ???. ?? ?????? ????? ??????????? ?????? ??? ?ι??? ?????? ????????.

???δ? ????? ??????? 2?????? ???????? ??? ??a???? ????? ????, ???? ??o ??????? ?????? ?????a??????? ???? ???? ???? ????? ???????. ???δ? ?? ??????? ?????????? ?????? ???? ???????? ???? ???濡 ???? ?? ???? ??????, ???? ???? ??? ???? ???? ????翡??? ?????? ?????? ???? ????? ??????.

???????? 1990??? ????? ???? ???°? ?????? ?????? 2005?? ????????? ????????? ??????? ?????? ?????? ??? ????? ??? ???? ???¿??? ???????? ????? ??? ???.