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2. Model Tests of Various Vortex Dissipation Techniques in a water Towing Tank;Dunham;NASA LWP-1145,1974
3. Observations of atmospheric effects of vortex wake behaviour;Tombach;J. Aircraft,1973
4. The Designers Guide to Wind Loading of Building Structures;Cook,1990
5. Measurement of the trailing vortex systems of large transport aircraft, using tower fly-by and flow visualization;Garodz,1976