$1!Ky!5y!O(':`'T2!0d'`S!BX!C!s - $1!2?!0-'1]!+5'=G!B~!09'Q[s ($1!4I!0a!9%':`!3K!JH!Nas, 1994)
Keywords: $1!O(':`!N#'Y<s