1. 1Glauert, H. (1926). The analysis of Experemental Results in the Windmill Break and Vortex Ring States of an Airscrew. Tech. Rep. 1026, ARCR R & M.
2. Optimizing a tandem disk model (for cross-wind turbine)
3. 3Sheldahl, R.E. & Klimas, P.C. (1980). Aerodynamic Chatacteristics of Seven Symetrical Airfoil Sections Though 180-Degree Angle of Attack for Use in Aerodynamic Analysis of Vertical Axis Wind Turbines. Tech. Rep. SAND80 2114, Sandia National Laboratories.
4. 4Strickland, J.H. (1975). The Darrieus Turbine A Performance Prediction Model Using Multiple Streamtubes. Tech. Rep. SAND75 0431, Sandia National Laboratories.