1. Albert R (1982) Halophyten. In: Kinzel H (ed) Pflanzenökologie und Mineralstoffwechsel. Ulmer, Stuttgart, pp 33–213.
2. Armstrong W, Wright EJ, Lythe S, Gaynard TJ (1985) Plant zonation and the effects of the spring-neap tide-cycle on soil aeration in a Humber salt marsh. J Ecol 73:323–340.
3. Bastin A (1974) Regionale sedimentologie en morfologie van de zuidelijke Noordzee en van het Scheide estuarium. Thesis Cath Univ Leuven, 91 pp.
4. Beeftink WG (1966) Vegetation and habitat of the salt marshes and beach plains in the south-western part of the Netherlands. Wentia 15:83–108.
5. Beeftink WG (1977) The coastal salt marshes of western and northern Europe: An ecological and phytosociological approach. In: Chapman VJ (ed) Wet coastal ecosystems. Elsevier, Amsterdam, pp 109–155.