1. Shariff, K. , Leonard, A. , Zabusky, N. J. & Ferziger, J. H. Acoustics and dynamics of coaxial, interacting vortex rings.
2. Moore, D. W. & Saffman, P. G. 1975 The density of organized vortices in a turbulent mixing layer.J. Fluid Mech. 69,465–473.
3. Moore, D. W. 1984 Numerical and analytical aspects of Helmholtz instability. InTheoretical and Applied Mechanics, Proc. XVI Intern. Congr. Theor. Appl. Mech. (ed. F. I. Niordson & N. Olhoff ), pp.629–633.North-Holland.
4. Keller, J. J. , Egll, W. & Althaus, R. Vortex breakdown as a fundamental element of vortex dynamics.
5. Kambe, T. & Takao, T. 1971 Motion of distorted vortex rings.J. Phys. Soc. Japan 31,591–599.