1. Andersson, A., U. Larsson & Å. Hagström, 1986. Size-selective grazing by a microflagellate on pelagic bacteria. Mar. Ecol. Prog. Ser. 33: 51–57.
2. Azam, F. & B. C. Cho, 1987. Bacterial utilization of organic matter in the sea. In M. Fletcher, T. R. G. Gray & J. G. Jones (eds), Ecology of microbial Communities. Cambridge University Press, Cambridge: 261–281.
3. Azam, F., T. Fenchel, F. G. Field, J. S. Gray, L.-A. Meyer-Reil & F. Thingstad, 1983. The ecological role of watercolumn microbes in the sea. Mar. Ecol. Prog. Ser. 10: 257–263.
4. Bergh, Ö., K. Y. Börsheim, G. Bratbak & M. Heldal, 1989. High abundance of viruses found in aquatic environments. Nature 340: 467–468.
5. Bloem, J., M. Starink, M.-J. B. Bär-Gilissen & T. E. Cappenberg, 1988. Protozoan grazing, bacterial activity, and mineralization in two-stage continuous cultures. Appl. envir. Microbiol. 54: 3113–3121.