Références
- Frey, B. E. & Small, L. F., 1980: Effect of micro-nutrients and major nutrients on natural phytoplankton populations. — J. Plankton Res. 2 (1):1–22.
- Hotelling H., 1933: Analysis of a complex of statistical variables into principal components. — J. Educ. Psychol. 24: 417–441 et 498–520.
- Ibanez, F., 1972: Interpretation de données écologiques par l'analyse des composantes principales. Ecologie planctonique de la Mer du Nord. — J. Cons. 34 (3):323–340.
- Olrik K., 1978: Cyanophyceae and environmental factors in 15 Danish lakes. — Verh. Internat. Verein. Limnol. 20:690–695.
- Telitchenko M. M., Tsytsarin, G. V. & Shirokova, Ye. L., 1970: Trace element and algal “bloom”. — Hydrobiol. J. 6 (6).