(3fXQjI GdLQjeI GdeJYOjI GdbUO aj GdbGfhf GdeUQj h GdebGQf (B/ s - (3KQhJ, LdGds ((3GdEScfOQjg (B:s (3efTCI GdeYGQa,s, 1986)
Keywords: (3GdbGfhf GdLfGFjs; (3eUQs