(3GdhLjR aj GdbGfhf GdJLGQI GdHMQjI GdeUQj GdLOjO (B/ s - (3aNQj , QaYJ s ((3O(B. (3e (B: s (3O(B. (3f , s, 1992)
Keywords: (3GdbGfhf GdJLGQj s -- (3eUQ s