1. A fluorimetric determination of lignin sulfonates from natural waters in the presence of humic substances;Almgren;Svensk Papp Tidn,1973
2. Standard Methods for the Examination of Water and Waste Water;APHA,1971
3. The mechanism of iron removal in estuaries;Boyle;Geochim. cosmochim. Acta,1977
4. What you don't know can hurt you: organic colloids in natural waters;Breger,1970
5. Trace metal species in fresh waters;Florence;Water Res.,1977