1. Alt Inc. Dental amalgam composition. Dispersalloy. http://www.altcorp.com/DentalInformation/amalgamcomp.htm [accessed 24 February 2005].
2. Mercury levels and discharge in waste water from dental clinics;Arenholt-Bindslev;Water Air Soil Pollut,1996
3. Christensen CL, Skårup S, Maag J, Jensen SH. Mass flow analyses of mercury 2001. Environmental Project Nr. 917 2004. COWI A/S and Danish Environmental Protection Agency, Copenhagen. 2004. 83 pp.
4. Engman, A. Kvicksilverförorening i avloppsrör i Lunds kommun. (Mercury contamination in waste water pipes of Lund municipality). MSc theses. Stockholm University, Stockholm, Sweden. 2004. 43 pp+app. [in Swedish; English summary].
5. EU. Consultation Document, Development of an EU Mercury Strategy. A working document issued by DG Environment for consultation of all parties interested in preparation of an EU strategy on mercury, which the Commission has been invited to present to the Council in 2004. Commission of the European Communities Directorate-General Environment (ENV.G) Sustainable Development and Integration, ENV.G.2, Industry. Brussels, 15 March 2004. http://europa.eu.int/comm/environment/chemicals/mercury/pdf/consultation.pdf [accessed March 20, 2004].