1. Allen, H. I. and E. W. Perkins, "A Study of Effects of Viscosity on Flow Over Slender Inclined Bodies of Revolution", NACA Report 1048, 1951.
2. Coe, P. L., Jr., 1.R. Chambers, and W. Letko, "Asymmetric Lateral . Directional Characteristics of Pointed Bodies of Revolution at High Angles of Attack, NASA TN D-7095, Nov. 1972.
3. Further experimental evidence of vortex splitting