Reference

Walter Geller, R. Berberovic, U. Gaedke, H. Müller, H.-R. Pauli, M.M. Tilzer, Thomas Weisse (1991): Relations among the components of autotrophic and heterotrophic plankton during the seasonal cycle 1987 in Lake Constance – Verh. int. Verein. theor. angew. Limnol. – 24: 831 - 836.