1. Exposure factors source book,1994
2. On heavy metals in soil: Rationalization of extractions by dilute salt solutions, comparison of the extracted concentrations with uptake by ryegrass and lettuce, and the possible influence of pyrophosphate on plants;Aten;Sci. Total Environ.,1996
3. Befolkningens kostvanor och näringsindtag (The population's food habits and intake of nutrients);Becker;Vår Föda,1992
4. Codex, 1995. Codex Alimentarius Commission. Revised discussion paper on lead. CX/FAC 95/18 Add. 2, January 1995.
5. Danish Ministry of Environment and Energy, 1995, Toksikologiske kvalitetskriterier for jord og drikkevand (Toxicological quality criteria for soil and drinking water), Projekt om jord og grundvand No. 12/1995.