$1'L{'KG!0=!Bk(B. $1!K0KNg!<hEWFs - $1!V#'Q}'[4!09'Q[s ($1!04K7os $1!0&!GW!O(':`!@,EWF!BX'K.!3K!JH!Nas, 2006)
Keywords: $1'L4'2W!92'Rq(B; $1!92#=5s