$1'Qy'7t!5@!;O!Bd!0-!L,'Pp']t(B. $1!0Qs - $1!66!>0!+5'\sK7o!Dw'Q[!BXs ($1!;F!<e'2z!Og!3K!JH!Nas, 1992)
Keywords: $1'2z!Og!N#'Y<s