References
- American Public Health Association, 1971: Standard Methods for the Examination of Water and Waste Water. — 13th ed. New York.
- Chiaudani, G. & Vighi, M., 1974: The N: P ratio and tests with Selenastrum to predict eutrophication in lakes. — Water Res. 8, 1063–1069.
- Dixon, W. G. (ed.), 1968: Biomedical computer programs. — Univ. of California Automatic Computation N° 2, Univ. California Press, Berkeley.
- Gibson, C. E., 1971: Nutrient limitation. — J. Wat. Poll. Contr. Fed. 43, 2436?2440.
- Golterman, H. L. (ed.), 1969: Methods for chemical analysis of fresh waters. — IBP Handbook 8, Blackwell Scientific Publications, Oxford-Edinburgh.
- Lee, F. G., 1973: Chemical aspects of bioassay techniques for establishing water quality criteria. — Water Res. 7, 1525?1546.
- Lund, J. W., 1970: Primary production. — Proc. Soc. Wat. Treat. Exam. 19, 332–358.
- National Eutrophication Research Program, 1971: Algal Assay Procedures: Bottle Test. — Environmental Protection Agency. Corvallis, Oregon.
- Skulberg, O. M., 1966: Algal cultures as a means to assess the fertilizing influence of pollution. — Proc. 3rd Int. Conf. Wat. Poll. Res., 1, 113–127.
- Solorzano, L., 1969: Determination of ammonia in natural waters by the phenolhypochlorite method. — Limnol. Oceanogr. 14, 799–801.
- Stephens, K., 1963: Determination of low phosphate concentrations in lake and marine waters. — Limnol. Oceanogr. 8, 361–362.
- Syrett, P. J., 1962: Nitrogen assimilation. — In: Physiology and biochemistry of algae, Lewin, R. A. (ed.). Academic Press.
- Walton, C. P. & Lee, G. F., 1972: A biological evaluation of the molybdenum blue method for orthophosphate analysis. — Verh. Internat. Verein. Limnol. 18, 676–684.