(3GdGYJQGa HGdOhdI GdLOjOI Hjf GdfXQjI h GdeeGQSI (B: s (3OQGSI JMdjdjI JGUjdjI dbhGYO GdbGfhf GdOhdj GdJj JMce GdGYJQGa HGdOhd h JWHjbGJgG (B/ s - (3efj eMehO eUWajs ((3GdbGgQI (B: s (3OGQ GdfgVI GdYQHjI , s, 1989)
Keywords: (3GdbGfhf GdOhdj GdYGes