Pathways of mud and particulate trace metals from rivers to the southern North Sea (paper presented at the International meeting on holocene sedimentation in the North Sea basin (Texel, The Netherlands, 1979)Trace metal concentrations in estuarine sediments: mobilization, mixing or precipitation (article in Netherlands Journal of Sea Research. - Vol. 11 (1977), nr. 2 ; p. 119-129)Adsorption processes and hydrodynamic conditions in estuaries (article in Environmental Technology Letters (Science & Technology Letters). - Vol. 1 (1980) ; p. 356-365)Biogeochemical processes affecting metal concentrations in lake sediments (IJsselmeer, The Netherlands) (article in The science of the total environment. - Vol. 16 (1980) ; p. 217-229)