$1'2>!<x!^n!Lo!@&!Lo!N#'Y<!?z!30s - $1!V#!5P!F'!+5'I1!2n'?.!Oz'Q[s ($1'_T!4c!0d!FM!3K!JH!Nas, 1992)
Keywords: $1!Lo!LF(B--$1!^n!Los