References
- Carlson, R. E., 1977: A trophic state index for lakes. — Limnol. Oceanogr. 22: 361–369.
- Cowell, B. C. & Vodopich, D. S., 1981: Distribution and seasonal abundance of benthic macroin-vertebrates in a subtropical Florida lake. — Hydrobiologia 78: 97–105.
- Environmental Protection Agency, 1979: Methods for chemical analysis of water and wastes. — EPA-600/8-78-017. Cincinnati.
- Lind, O. T., 1979: Handbook of Common Methods in Limnology. — C. V. Mosby Co., St. Louis.
- Pielou, E. C., 1977: Mathematical Ecology. – John Wiley and Sons, New York.