(3GdOjf hGdMjGI (B/ s - (3YHOGddg TMGJIs ((3GdbGgQI (B: s (3OGQ ZQjH ddWHGYI hGdfTQ hGdJhRjY , s, 1997)
Keywords: (3GdGSdGes; (3GdGSdGe hGdeLJeYs; (3GdGSdGe (B- (3OYhIs; (3GdGSdGe hGdGUdGM GdGLJeGYis; (3GdKbGaI GdGSdGejIs