1. Derham RC, Weems DB, Mathew MB, Bussom R. The design evolution of an active materials rotor. In: Proceedings of the 57th American Helicopter Society Forum; 2001.
2. duPlessis AJ. Modeling and experimental testing of twist actuated single cell composite beams for helicopter rotor blade control. MS Thesis. Department of Aeronautics and Astronautics, Massachusetts Institute of Technology; 1996.
3. Wilkie WK, Park KC. An aeroelastic analysis of helicopter rotor blades incorporating piezoelectric fiber composite twist actuation. NASA Technical Memorandum 110252/US Army Research Laboratory Memorandum Report 328; 1996.
4. Wilkie WK. Anisotropic piezoelectric twist actuation of helicopter rotor blades: aeroelastic analysis and design optimization. PhD Thesis. Department of Aerospace Engineering Sciences, University of Colorado; 1997.
5. Rodgers JP. Development of an integral twist-actuated rotor blade for individual blade control. PhD Thesis. Department of Aeronautics and Astronautics, Massachusetts Institute of Technology; 1999.