References
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- Roos, P. J. & Trueba, F. J., 1977: Epiphytic protozoans on reed rootlets from Dutch waters. — Hydrobiologia 54: 241–245.
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- Wetzel, R. G. & Allen, H. L., 1970: Functions and interactions of dissolved organic matter and the littoral zone in lake metabolism and eutrophication. — In: Z. Kajak & A. Hillbricht-Ilkowska, eds., Productivity problems of fresh waters: 333–347. Warszawa.