$1!:s!4H!0&!0d!0P#=5s - $1!:s!4H!0&!0ds ($1!C=!?/!0=!HA!3K!JH!Nas, 1993)
Keywords: $1!123BD'2F'X<(B--$1!04K7o!2N!17'2F'X<s