$1!0q!;e!H`!F%(B, $1'_#!1A!5c!<l!BX!_As - $1'_#!1A!5c!UNs ($1'=*'D&!0d!FM!3K!JH!Nas, 1985)
Keywords: $1!BM!BX!+9'_9'Oy!+5!Bs'X<s