?? ???? ?? ???(1917～2012)? 20??? 1? ????(1914? ??)? ?? ??? ??? ??(1991?)? ???? ‘?? 20??’?? ??????. ‘??? ????’ 10? ?? ??? ????? ??? ??? 1992? ‘???? ???’? ??? ??? 1997? ????? ???, ‘?? 90??’? ??? ??? ????.
?? ‘??? ?? ???’(??? ??·????????????)? 1970???? ‘X??’? ????. X??? ??? ???? ??? ???? ??? ???. ?? ‘???? ??’? ‘86??’??, ?? ‘?? ??’? ‘88? ? ??’ ?? ???? ????. ??? ??? ?? ? ??? ??? ???? ??? ???.
?? ??? ‘?? ??? ?????’(??? ??·??)? ??, 1990???? ‘? ??? ?? ??????’ ‘??? ???’ ? ??? ???? ?? ‘???? ???? 7?? ??’? ?????? ??????(??? ??). ?????? ? ?? ??? ????? ?? ?? ?????. ??? 20? ?? ?? ????? ‘? ??’? ??? ????.