Delft hydraulics publications. N 406 : Water quality modelling of the southern North sea : A useful tool for research and managemant;Paper presented at the intern.conf.on environmental protection of the North sea, London, 24-27 Mar.1987 / J.A. van Pagee,P.C.G.Glas,C.F.Hopstaken,L.Postma, 1989. - 15 p. - Текст : непосредственный.
Verification of DEMNIP on data from the hupselse beek research basin : Contribution to the conf.on hydrological research basins and the environment and third general meet.of the European network of experimental and represintative basins Wageningen, 24-28 Sept.1990 / E.F.Ruygh,P.S.Grashoff,C.F.Hopstaken,J.P.M.Witte, 1990. - 10 p.