1. Fluid Mixing in Stratified Gravity Currents: The Prandtl Mixing Length
2. H. E. Huppert, in Perspectives in Fluid Dynamics: A Collective Introduction to Current Research, edited by G. K. Batchelor, H. K. Moffatt, and M. G. Worster (Cambridge University Press, Cambridge, UK, 2000), pp. 447–506.
3. Unsteady axial mixing by natural convection in a vertical column
4. E. E. Zukoski, “A review of flows driven by natural convection in adiabatic shafts,” NIST Report No. NIST-GCR-95-679, 1995, and references therein.
5. Mixing efficiency in high-aspect-ratio Rayleigh–Taylor experiments