References
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- Maltby, E., 1986: Waterlogged wealth. Why waste the world's wet places? — 200 pp. International institute for environment and development, London and Washington, DC. Russell Press, Nottingham, U.K.
- Petersen, R. C., Petersen L. B.-M. & Lacoursière, J., 1992: A building-block model for stream restoration. — In: Boon, P. J., Calow, P. & Petts, G. E.: River conservation and management. — 293–309.
- Rekolainen, S., 1989: Phosphorus and nitrogen load from forest and agricultural areas in Finland. — Aqua Fennica 19: 95–107.