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[3] Atkins, S., "Development of an Active Control System to Suppress, Using Forced Unsteadiness, Separation in Low-Speed Diffuser Flow." 16.622 Final Report, MIT, 1990.
[4]Kwong, A., Dowling, A.P., "Active Boundary Layer Control in Diffusers." Cambridge University: Cambridge, UK. AIAA-93-3255.