$1!Bs!Ci!N%!P.!A3!KH!Pa'\O !0=!0$s - $1!8x'EU3_s!:M !Oz!UNs ($1!58'ICs $1'Xm!BX!3K!JH!Nas, 1994)
Keywords: $1!A3!KH!;E'Xis