1. AIAA Paper;M Piatt,1979
2. Viets, H.: Unsteady Ejectors, Proc, NATO/AGARD Meeting on Jet Flows with Application to V/STOL, NATO/AGARD CP-308, Nov. 1981.
3. Viets, H.; Ball, M; and Piatt, M.: Experiments in a Sub-scale Pilot Gust Tunnel, AIAA Journal, Vol, 19, No, 6, June 1981, pp. 820–822.
4. Viets, H.: Coherent Structures in Time Dependent Flow, -Proceedings of the NATO/AGARD Specialists Meeting on Turbulent Boundary Layers, The Hague, Netherlands, September 1979.
5. Viets, H.; Piatt, M.; and Ball, M.: Boundary Layer Control by Unsteady Vortex Generation, J. Wind Eng. & Ind. Aero., Vol. 7, 1981, pp. 135–144.