1. 1Sandford, M. C., Abel, I., and Gray, D. L. “Developement and Demonstration of a Flutter-Suppression System using Active Controls,” Tech. Rep. TR-R450, NASA TR-R450, 1975.
2. Flutter suppression for the active flexible wing - A classical design
3. 3Waszak, M. R. and Srinathkumar, S. “Design and Experimental Validation of a Flutter Suppression Controller for the Active Flexible Wing,” Tech. Rep. TM-4381, NASA, 1992.