@conference {Darmofal_1995_Wave_propagation_vortical_flows,
	title = {Wave propagation characteristics of vortical flows in varying-area pipes},
	booktitle = {AIAA conference paper},
	number = {AIAA-95-2307},
	year = {1995},
	keywords = {vortex breakdown},
	author = {Darmofal, D L and Cary, A W and Powell, K G}
}
