1. [1] Franklin, G.F., Powell J.D., and Workman, M.L., "Digital Control of Dynamic Systems (2nd Ed.)", Addison-Wesley Publishing Company, (1990).
2. [2] Stich, M.C., Resman, J.B., Ottesen, H.H., and Anderson, T.B., "Adaptive Control Technique for a Dynamic System", US Patent 4,697,127, September 1987.
3. [3] Stich, M.C., "Digital Servo Control Algorithm for Disk Actuator Control", Proceedings of Conference on Applied Motion Control '87, Minneapolis, MN., June 16-18, pp.35-41.
4. [4] Ottesen, H.H., "Digital Servo Control for High Performance VCM in DASD", Proceedings of 18th Annual Symposium for Incremental Motion Control Systems and Devices, Champaign, lL, June 1989, pp.23-28.
5. [5] Ottesen, H.H., "Use of Elliptic Filters With Disk Drive Servo", IBM Technical Disclosure Bulletin, August 1990, pp. 222-223.