Armonies, W. (1986). Free-living plathelminthes in sheep-grazed and ungrazed supralittoral salt marshes of the North Sea: abundance, biomass, and their significance in food chains. Neth. J. Sea Res. 20(4): 385-395, more [ download pdf ]
Bongers, T. (1983). Bionomics and reproductive cycle of the nematode Leptosomatum bacillatum living in the sponge Halichondria panicea. Neth. J. Sea Res. 17(1): 39-46, more [ download pdf ]
Reid, P.C.; Lancelot, C.; Gieskes, W.W.C.; Hagmeier, E.; Weichart, G. (1990). Phytoplankton of the North Sea and its dynamics: a review. Neth. J. Sea Res. 26(2-4): 295-331, more [ download pdf ]
