1. Physico-chemical aspects of activated sludge;Andreadakis,1978
2. Gross dimensions of activated sludge flocs with reference to bulking;Finstein;J. Wat. Pollut. Control Fed.,1967
3. Review of methods of purifying and analyzing water soluble dyes;Giles;Test Res. J.,1962
4. Use of dyes for specific surface measurements;Giles,1969
5. Use of p-nitrophenol for specific surface measurement of granular solids and fibres;Giles;J. appl. Chem.,1970