1. Ericsson, B.: 1967, Vatten
23, 92 (in Swedish).
2. Ericsson, B.: 1972, Chemical
Pre-TreatmentBefore
Biological Treatment in Sewage Plants, Presented at IAWPR Congress ‘Phosphorus in Fresh Water and the Marine Environment’, London, April 11–13.
3. Ericsson, B. and Lundberg, B.: 1970, Vatten
26, 370, (in Swedish).
4. Ericsson, B. and Westberg, N.: 1966, Teknisk
Tidskrift
96, 975, (in Swedish).
5. Ericsson, B. and Westberg, N.: 1968, Vatten
24, 125 (in Swedish).