(3JfejI GdbOQGJ GdbjGOjI ddYGedjf HGdLGeYGJ s - (3GdSjO , Nda LGO GdQH(B, s; (3GdSjO , Nda LGO GdQHs ((3GdYde hGdGjeGf ddfTQ hGdJhRjYs, 2009)
2