[1]Chen, D. and Z. Sheying, "control of Separation in Diffusers Using Forced Unsteadiness." Nanjing Aeronautical Institute. AIAA 89-1015, 1989.

[2]Oh, David, "Active Control of Airflow Instabilities in 2-D Diffusers." 16.622 Final Report, MIT, 1990.

[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.