@conference {Darmofal_1994_trappedwaveavbd,
	title = {On the trapped wave nature of axisymmetric vortex breakdown},
	booktitle = {AIAA conference paper},
	number = {AIAA-94-2318},
	year = {1994},
	keywords = {vortex breakdown},
	author = {Darmofal, D L and Murman, E M}
}
