1. The distribution of estuarine macrophytes in relation to freshwater;Adams;Bot. Mar.,1992
2. Adams, J.B., Bate, G.C., 1994. The freshwater requirements of estuarine plants incorporating the development of an estuarine decision support system. Water Research Commission Report No. 292/1/94. Pretoria, South Africa. 151 pp.
3. Anon., 1992. An Introduction to Fluorescence Measurements with the Plant Efficiency Analyser (PEA). Hansatech Instruments Ltd., Narborough Road, Pentney, Norfolk PE32 1JL, England.
4. Benfield, M.C., 1984. Some factors influencing the growth of Phragmites australis (Cav.) Trin ex Steudel. Unpublished M.Sc. Thesis. University of Natal, South Africa. 199 pp.
5. Photon yield of O2 evolution and chlorophyll fluorescence characteristics at 77K among vascular plants of diverse origins;Björkman;Planta,1987