1. Baas Becking, L. G. M., and Wood, E. J. F. 1955. Biological processes in the estuarine environment. I–II. Ecology of the sulfur cycle.Proc. Koninkl. Ned. Akad. Wetenschap., Sect. B 58: 160–181.
2. Baas Becking, L. G. M., Wood, E. J. F., and Kaplan, J. R. 1957. Biological processes in the estuarine environment. X. The place of the estuarine environment within the aqueous milieu.Proc. Koninkl. Ned. Akad. Wetenschap., Sect. B 60: 88–102.
3. Biebl, H., and Drews, G. 1969. Das in-vivo-Spektrum als taxonomisches Merkmal bei Untersuchungen zur Verbreitung von Athiorhodaceae.Zbl. Bakt., II Abt. 123: 425–452.
4. Burkholder, P. R., and Rützler, K. 1969. Antimicrobial activity of some marine sponges.Nature 222: 983.
5. Cooper, L. H. N. 1937. Oxidation-reduction potential of sea water.J. Mar. Biol. Ass. U.K. 22: 167–176.