$1-bb!7u'^e'Q4(B: $1!04K7o'2F'Q1!Na'CZ'Q4'E9!A)!D+s - $1'I1!9%!=u!+5-5\!=0!7-!UNs ($1!GM!Fd!0d!FM!3K!JH!Nas, 1994)
Keywords: $1!5=!7y'_K!UNs