1. and 1990: Allgemeine Hydrologie. Quantitative Hydrologie. - In: Liebscher, H.-J. (ed.): Lehrbuch der Hydrologie. Gebrüder Bornträger, Berlin, Stuttgart, 673 pp.
2. and 1987: Wasserpflanzengesellschaften als Hilfe zur Qualitätsüberwachung eines der größten Grundwasser-Vorkommens Europas (Oberrheinebene). - In: Miyawaki, A. u.a. [ed.]: Vegetation Ecology and Creation of New Environments. Tokyo (Tokai Univ. Press). (= Proceed. Intern. Sym.): 283-312.
3. Aquatic macrophyte communities as bioindicators of eutrophication in calcareous oligosaprobe stream waters (Upper Rhine plain, Alsace)
4. 1988: Water flow and the vegetation of running waters. - In: Symoens, J. J. [ed.]: Vegetation of inland waters. Kluwer Academic Publishers, Dordrecht (NL): 283-309.
5. EC - European Communities, 2000: DIRECTIVE 2000/60/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 October 2000 establishing a framework for Community action in the field of water policy. OJ L 327, 22. 12. 2000.