(3eLdS GdTYH(B.s ((3GdbGgQI (B:s (3LeghQjI eUQ GdYQHjI(B-(3bSe eLdS GdTYH,s, 1982)
(3bQGQGJ GdeDJeQ GdHQdeGfj GdOhdj(B.s
Keywords: (3GdbGfhf GdOSJhQjs -- (3OhQjGJs