(3GdbGfhf GdOhdj GdCbJUGOj GdeYGUQ (B/s - (3MGRe MSf LeYIs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1989)
. 255-245 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdOhdj GdGbJUGOjs; (3GdbGfhf GdOhdj GdYGes