1. Fischer, W. in: Ullmanns Encyklopädie der technischen Chemie, Vol.24, p. 128, Weinheim, Chemie GmbH 19834
2. Gold, H. in: MVC Report 2, Fluorescent Whitening Agents, p. 23, Stockholm 1973
3. Fischer, W.K., Gode, P.: Z. Wasser-Abwasser-Forsch. 11, 99 (1978)
4. ISO 7346-1984 (2 and 3, resp.) Water Quality — Determination of the acute lethal toxicity of substances to a fresh water fish, Part 3: Flow-through method
5. OECD Guideline for Testing of Chemicals 204, Fish, Prolonged Toxicity Test: 14 Day Study