1. Propellers in Yaw;ribner;NACA Report 820,1945
2. An Analytical Treatment of Aircraft Propeller Precession instability;reed;NASA TN D-659,1961
3. Investigation of Propeller-Power-Plant Auto-precession Boundaries for a Dynamic-Aeroelastic Model of a Four Engine Turboprop Transport Airplane;abbott;NASA TN D-1806,1963
4. Propeller-Rotor Whirl Flutter: A State-of-the-Art Review;reed;Symposium on the Noise and Loading Actions on Helicopter V/STOL Aircraft and Ground Effect Machines,1965