$1!X4']8!04K7o(B: $1'XN!Os!0$!5<!MR!MY!MJ!04K7os - $1'4"!C=!;x'Q[s ($1!C!'8D!3K!JH!Nas, 1996)
Keywords: $1!04K7o!8{!0^(B--$1K7o'_7!7y!1+s