1. Supersonic transport flutter SAS conceptual study results,1969
2. Feasibility of an active flutter control demonstration,1970
3. Development and demonstration of a flutter suppression system using active controls;Sandford;NASA TR R-450,1975
4. The control of flutter instability in a continuous elastic system using feedback;Moon,1970
5. Feedback control of flutter instability in a continuous elastic system;Kalmbach;AIAA J.,1972