1. Zirkulation und Schadstoffumsatz in der Nordsee (ZISCH);Anonymous,1987
2. Phaeocystis pouchetii blooms in the East Frisian coastal waters (German Bight, North Sea);Bätje;Mar. Biol.,1986
3. Phytoplankton biomass and potential nutrient limitation of phytoplankton in the southeastern North Sea in spring 1985 and 1986;Bauerfeind;Neth. J. Sea Res.,1989
4. Trends in nutrient and phytoplankton concentrations at Helgoland Reede (German Bight) since 1962;Berg,1985
5. River inputs of nutrients into the German Bight;Brockmann;NATO ASI Series,1986