1. Health and monitoring system enhances helicopter safety, Aviation Week and Space Technology 139 (12) (1993) 94.
2. J.D. Roe, D.G. Astridge, The health and usage monitoring of helicopter systems—the next generation, in: Proceedings of the American Helicopter Society 41st Annual Forum, Fort Worth, TX, 1985, pp. 175–187.
3. D.C. Lombardo, Helicopter structures—a review of loads, fatigue design techniques and usage monitoring, Technical Report ARL-TR-15, Australian Department of Defense: Aeronautical Research Laboratory, May 1993
4. J. Land, C. Weitzman, How HUMS systems have the potential of significantly reducing the direct operating cost for modern helicopters through monitoring, in: Proceedings of the American Helicopter Society 51st Annual Forum, Fort Worth, TX, 1995, pp. 744–757.
5. J.S. Kiddy, A Modal-base Damage Detection Technique for Helicopter Rotor Blades, PhD Thesis, University of Maryland, College Park, MD, USA, February 1999.