1. Carlton, R.G. and Wetzel, R.G.: 1987,Can. J. Bot. 65, 1031–1037.
2. Carlton, R.G. and Wetzel, R.G.: 1988,Limnol. Oceanogr. 33, 562–570.
3. Christensen, K.K. and Andersen, F.O.: in press.Influence of Littorella uniflora on phosphorus retention in sediment supplied with artificial porewaterAquat. Bot.
4. Christensen, K.K., Andersen, F O. and Jensen, H.S., in press. Comparison of iron, manganese, and phosphorus retention in freshwater littoral sediment with growth ofLittorella uniflora and benthic microalgae.Biogeochemistry.
5. Christensen, P.B., Revsbech, N.P. and Sand-Jensen, K. 1994,Plant Physiol. 105, 847–852.