1. Anliker, R.: Ecotox. Environ. Safety 1, 211 (1977)
2. Wiedhaup, K.: Acta Pharm. Technol. Suppl. 8, 67 (1979)
3. Anliker, R., Müller, G.: Fluorescent Whitening Agents. Environ. Qual. Safety Suppl.
4. G. Thieme, Stuttgart, Academic Press, New York 1975
5. Venkatamaran, K. (Ed.): The Chemistry of Synthetic Dyes. Academic Press, New York 1952 ( Vol. I) to 1978 ( Vol. VIII )