(3JfejI GdbOQGJ GdGHJcGQjI dOi GdaQO hGdefXeI (B/ s - (3eOMJ GHhGdfUQs ((3GdbGgQI (B: s (3eLehYI Gdfjd GdYQHjI , s, 2004)
Keywords: (3GdJacjQs; (3GdPcGAs; (3GdGHJcGQs; (3GdbOQGJs