(3GdYdGbGJ GdCQOfjI GdESQGFjdjI (B: s (3GdLPhQ (B- (3GdBaGb (B/ s - (3GdMHGTfI, NGdOs ((3O(B.(3f (B:s (3O(B.(3e,s, 1999)
Keywords: (3GdYdGbGJ GdOhdjIs; (3GdEJaGbjGJ GdOhdjIs