References
Whitton, B. A., in: Algae as Ecological Indicators, p. 257 (L. Elliot Shubert, ed.). London-New York: Academic Press 1984
Gemmer-Čolos, V., Neeb, R.: Fresenius Z. Anal. Chem.334, 709 (1989)
Gemmer-Čolos, V., Neeb, R.: ibid.327, 547 (1987)
Meyer, A., Neeb, R.: ibid.321, 325 (1985)
Knapp, G.: ibid.317, 213 (1984)