(3OjhGf eLfhf djdi (B: s $1 (B/ s ((3HjQhJ (B: s (3GdecJHI GdYUQjI , s, 2012)
Keywords: (3GdTYQ GdYQHj; GdZRd; eLfhf djdi; GdJQGK GdYQHjs