(3fhQGf JJYde GdGQbGes (3GdefGgL hGdGNJHGQGJ ehShYGJ GdceHjhJQ hGdGfJQfJ GdbQBf hGdMOjK GdJYdje HGdJQajg (B/s - (3NdjaI(B.s ((3GdbGgQI (B:s (3hRGQI GdKbGaI(B,s, 2000)
Keywords: (3JYdje (B-(3EHJOGFi(B-(3eUQ(B.s