References
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- Eu, 2000: EU's Water Framework Directive. — EGT L 327, 22.12.2000. 1–72.
- Moss, B., 2000: Conservation — of freshwaters or of the status quo? — Verh. Internat. Verein. Limnol. 27: 88–96.
- Robarts, R. & Wetzel, R. G., 2000: The looming global water crisis and the need for international education and cooperation. — SIL News 29: 1–3.
- Schindler, D. W., Kling, H. & Schmidt, R. V., 1973: Eutrophication of Lake 223 by addition of phosphate and nitrate: the second, third and fourth years of enrichment. — J. Fish. Res. Bd. Can. 30: 1415–40.
- Vollenweider, R., 1976: Advances in defining critical loading levels for phosphorus in lake eutrophication. — Mem. Ist. Ital. Idrohiol. 33: 53–83.
- Wetzel, R. G., 2001: The siren call of biodiversity. — SIL Annual Circular. 1–2.