1. •Green, J.E. "On the Influence of Free Stream Turbulence on a Turbulent Boundary Layer as it Relates to Wind Tunnel Testing at Subsonic Speeds," AGARD Report 602, 1973 and RAE TR72201, 1972.
2. Free stream turbulence and attached subsonic turbulent boundary layer
3. 5Kooi, J.W. "Influence of Free Stream Mach Number on Transonic Shock Wave Boundary Layer Interaction," NLR MP 78013u,1978.