1. Anon. (1994). Handling Qualities Requirements fo Military Rotorcraft, Aeronautical Design Standard ADS-33D. United States Army ATCOM, St. Louis, MO.
2. Digital Control of Dynamic Systems;Franklin,1990
3. Digital re-design of the Bell 205 airborne simulator artificial feel system;Gubbels;Canadian Aeronautics and Space Journal,1997
4. Dealing with secondary actuator saturation in dual stage hdd servo;Guo,2002
5. Improvement of a novel dual-stage large-span track-seeking and track-following method using anti-windup compensation;Herrmann,2006