1. Wing-flow study of pressure-drag reduction at transonic speed by projecting a jet air from the nose of a prolate spheroid of fineness ratio of 6;Lopatoff;J. Spacecr., NACA RM L51E09,1951
2. An experimental investigation of the effect of ejecting a coolant gas at the nose of a bluff body;Warren;J. Fluid Mech.,1960
3. A.F. Grenich, W.C. Woods, Flow Field Investigation of Atmospheric Braking for High Drag Vehicles with Facing Jets., AIAA-81-0293.
4. Hypersonic drag and heat-transfer reduction using a forward-facing jet;Meyer;J. Aircr.,2001
5. E. Josyula, M. Pinney, W. Blake, Applications of a Counterflow Drag reduction Technique in High Speed Systems. AIAA 2001-2437.