$1'\u!;E!<c!5w!0q!M"!0P'E-(B: $1KN7!ON'\O!U8(B. $1!0%s - $135d!C*'ag !09'Q[s ($1!04!3('bo!5=!3K!JH!Nas, 1993)
Keywords: $1'\u!;E!<c'2F'X<s