(3GdSjGSI GdGbJUGOjI GdESdGejI dJQTjO GdGSJgdGc GdaQOj ddSdY hGdNOeGJ (B:s (3OQGSI ebGQfI (B/s - (3Hjdi EHQGgje CMeO GdYdjejs ((3WfWG (B:s (3GdJQcj ddceHjhJQ hWHGYI GdChaSJ(B,s, 2000)
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs