1. Observations of Unsteady Flow Arising After Vortex Breakdown;Cassidy;J. Fluid Mech.,1970
2. Gouldin, F. C., “Probe Measurements in Multidimensional Reacting Flows”, Testing and Measurement Techniques in Heat Transfer and Combustion, AGARD Conf. Proc. No. 281, Brussels, Belgium, May 5-7, p. 4-1- 4-5 1980.
3. Solution of the Navier-Stokes Equations for Vortex Breakdown;Grabowski;J. Fluid Mech.,1976
4. Hallett, W. L. H., “Zur Strömung und Mischung in einer eingeschlossenen Drallströmung mit Querschnittsänderungen”, Dr.-Ing. Dissertation, Universität Karlsruhe (1981).