1. Sawyer CN (1966) Basic concepts of eutrophication. J Water Pollution Control Fed 38(5):737
2. Sakamoto M (1966) Primary production by phytoplankton community in some Japanese lakes and its dependence on lake depth. Arch Hydrobiol 62:1
3. Vollenweider RA (1968) The scientific basis of lake and stream eutrophication, with particular reference to phosphorus and nitrogen as factors in eutrophication, Technical Report to OECD, Paris, DAS/CSI/68.27, 1
4. Vollenweider RA, Dillon PJ (1974) The application of the phosphorus loading concept to eutrophication research. Canada Centre for Inland Waters, NRCC 13690, Burlington
5. Phelps EB (1944) Stream sanitation. Wiley, New York