References
- Healey, F. P., 1975: Physiological Indicators of Nutrient Deficiency in Algae. — Fish. Mar. Service, Tech. Report 585.
- Lean, D. R. S., Abbott, A. P., Charlton, M. N. & Rao, S. S., 1983: Seasonal phosphate demand for Lake Erie plankton. — J. Great Lakes Res. 9: 83–91.
- Lean, D. R. S. & Pick, F. R., 1981: Photosynthetic response of lake plankton to nutrient enrichment: a test for nutrient limitation. — Limnol. Oceanogr. 26: 1001–1019.
- Lean, D. R. S. & White, E., 1983: Chemical and radiotracer measurement of phosphate uptake by lake plankton. — Can. J. Fish. Aquat. Sci. 38: 224–232.
- Zimmerman, R., Iturriaga, R. & Becker-Birck, J., 1978: Simultaneous determination of the total number of aquatic bacteria and the total number thereof involved in respiration. — Environm. Microbiol. 36: 926–935.