1. COX, H. R.; PUGSLEY, A. G.: Theory of Loss of Lateral Control Due to Wing Twisting. ARC R.& M. 1506 (1932)
2. PUGSLEY, A. G.; COX, H. R.: The Aileron Power of a Monoplane. ARC R. & M. 1640 (1934)
3. COX, H. R.; PUGSLEY, A. G.: Stability of Static Equilibrium of Elastic and Aerodynamic Actions on a Wing. ARC R. & M. 1059 (1934)
4. DÄTWYLER, G.: Der Einfluß der elastischen Deformation auf die Luftkräfte am Tragflügel. Schweizer Aero-Revue Bd. 6 (1931) Nr. 29 S.264
5. DÄTWYLER, G.: Calculations of the Effect of Wing Twist on the Air Forces Acting on a Monoplane Wing. NACA TN 520 (1935)