Clarifiers

Wakeman R.J., Burgess D.R. and Stark R.J., 1994.  The Howden-Wakeman Filter in Watewater Treatment, Filtration and Separation, 31(2), 183-187.

Wakeman R.J., Davies T.P. and Manning C.J., 1988.  The HW Filter - A New Concept for Clarification Filtration, Filtration and Separation, 25(6), 407-410.