$1!X$!Bg!0d!MJ!5t!>C'1Ls - $1!BgK<8!?b!+5'V$!DG'2^ 'Q[s ($1!04K7o!5w!<c!3K!JH!Nas, 1991)
Keywords: $1!5t!>C'1L'2F'X<s