$1!Ky!4H!F'!7I'T2KNg!;!'?n-J;s - $1'a,'Q}'D&!09'Q[s ($1!X4!B@'[4!BX'V1!3K!JH!Nas, 2002)
Keywords: $1'Q,!UC!3)!7I(B; $1!Ky!JU!3)!7I(B; $1!4H!Ky!B@!3)!7Is