1. The dependency on scale of power numbers of Rushton disc turbines
2. and Proc. World Congress III of Chem. Eng., Tokyo, Paper W-624 (1986).
3. and Proc. 2nd European Conf, on Mixing, (BHRA, Cranfield, U.K., 1977), F1-F16 and X53-X59.
4. and Proc. 5th European Conf, on Mixing, (BHRA, Cran-field, U.K., 1985), pp. 143-155.