1. Azam, F., T. Fenchel, J. G. Field, J. S. Gray, L.-A. Meyer-Reil, and F. Thingstad. 1983. The ecological significance of water-column microbes in the sea. Mar. Ecol. Progr. Ser. 10: 257–263.
2. Baleux, B., and M. Troussellier. 1985. Méthodes de classification et d’identification des bactéries, p. 167–219. In G. Martin [coord.] Bactériologie des milieux aquatiques. Série: Point sur l’épuration et le traitement des effluents (eau, air), Volume 2, Tome 2. Technique et Documentation Lavoisier, Paris.
3. Bölter, M. 1977. Numerical taxonomy and character analysis of saprophytic bacteria isolated from the Kiel Fjord and the Kiel Bight, p. 148–178. Iri G. Rheinheimer [ed.] Microbial ecology of a brackish water environment. Ecol. Stud. 25. Springer-Verlag, Berlin.
4. Bölter, M. 1982. DOC-turnover and microbial biomass production. Kieler Meeresforsch. Sonderh. 5: 304–310.
5. Bölter, M., L.-A. Meyer - Reil, and B. Probst. 1977. Comparative analysis of data measured in the brackish water of the Kiel Fjord and the Kiel Bight, p. 249–280. In G. Rheinheimer [ed.] Microbial ecology of a brackish water environment. Ecol. Stud. 25. Springer-Verlag, Berlin.