(3JfRjd GdGjGJ Ydj GdhGbY YfO GdeaSQjf (B: s (3OQGSI hJWHjb (B-(3SdSdI GdOQGSGJ GdGSdGejI(B(4) / s ((3GdGeGQGJ (B: s (3LGFRI OHj GdOhdjI ddbQBf GdcQje , s, 2007)
Keywords: (3GdJaSjQ hYdhe GdbQGfs