1. Limitations of Circulation Lift;Helbold;Journal of the Aeronautical Sciences,1957
2. The Elements of Aerofoil and Airscrew Theory;Glauret,1948
3. Mathematical Model for Two Dimensional Multi-Component Airfoils in Viscous Flow;Stevens;NASA CR-1843,1971
4. The Production of Lift Independently of Incidence;Thwaites;Journal of the Royal Aeronautical Society,1948
5. Linearised Performance Analysis of Sailing and Motor Sailing;Satchwell,1983