1. Behrens, W. (1973): Private communication
2. Corrsin, S. (1947): Rev. Sci. Instr., Vol. 18, No. 7, p. 469
3. Demetriades, A. (1968): Physics of Fluids, Vol. 11, No. 9, p. 1841
4. Demetriades, A. (1973b): Trans. of ASME, Series E, J. App. Mech. Vol. 40, No. 3, p. 822
5. Ellington, D., Picard, A.G. and Park, K.R. (1970): DREV TN-1901/70, Quebec, Canada