1. Berlin A, des Castilho P, Smeets J (1973) In: Proceedings International Symposium Environmental Health Aspects of Lead. Commission of the European Communities, Luxembourg, pp 1033–1046
2. Berlin A, Langevin M, Wagner HM, Krause C, Yeoman WB (1983) Wiss Umwelt 3:124–137
3. Boone J, Hearn T, Lewis S (1979) Clin Chem 25:389–393
4. Brown SS (1982) In: Kaiser E et al. (eds) Proceedings XI International Congress of Clinical Chemistry. De Gruyter, Berlin, pp 417–421
5. Browne RC, Ellis RW, Weightman D (1974) Lancet II:1112–1113