1. Karamcheti, K., Bauer, A., Shields, W.L., Stegen, G., and Woolley, P.J. "Some Features of an Edge Tone Flow Field/' NASA SP-207, 1969.
2. Woolley, P.J. "An Investigation of Edge Tones and the Role of Flow Field Instability in their Generation," Ph.D. Thesis,Stanford University, Stanford, Calif. 1973.