Literatur
- Allen, M. B. 1955. General features of algal growth in Sewage oxidation ponds. — SWPCB Publ. No. 7, Sacramento.
- Aulenbach, D. B., and Heukelekian, H. 1955. Transformation and effects of reduced sulfur compounds in sludge digestion. — Sewage Industr. Wastes 27, 1147–1159.
- Malchow-Moller, O., Bonde, G. J., and Fjerdingstad, E. 1955. Treatment of domestic sewage in lagoons. — Schweiz. Z. Hydrol. 17, 98–122.
- Parker, A., et al. 1950. Purification of sewage in lagoons. — Sewage Industr. Wastes 22, 760–775.
- Pennington, W. 1940. The control of the numbers of the freshwater phytoplankton by small invertebrate animals. — J. Ecol. 28, 204–211.
- Ryther, J. H. 1954. Inhibitory effects of phytoplankton upon the feeding of Daphnia magna with reference to growth, reproduction and survival. — Ecology 35, 522–533.
- Uhlmann, D. 1955. Abwasserbedingte Massenentwicklungen von Daphnia magna und Daphnia pulex. — „Vom Wasser” 12, 167–175.
- Weimann, R. 1935. Chemisch-biologische Untersuchungen an einem Teich. — Arch. Hydrobiol. 27, 619–658.