1. J.D. Cronkhite, Practical application of health and usage monitoring (HUMS) to helicopter rotor, engine and drive system, Proceedings of the American Helicopter Society 49th Annual Forum, May 19–21, 1993, St. Louis, MO, USA, pp. 1445–1455.
2. J. Land, C. Weitzman, How HUMS have the potential of significantly reducing the direct operating costs for modern helicopters through monitoring, Proceedings of the American Helicopter Society 51st Annual Forum, May 9–11 1995, Fort Worth, TX, USA, pp. 744–757.
3. A review of vibration-based techniques for helicopter transmission diagnostics;Samuel;Journal of Sound and Vibration,2005
4. Analytic extraction of the elastic coupling mechanisms in composite blades;Alkahe;Composite Structures,2000
5. Analysis of an actively twisted rotor by multi-body global modelling;Ghiringhelli;Composite Structures,2001