1. Department of Health and Human Services and Prevention, Center for Disease Control; Surveillance for Elevated Blood Lead Levels Among Childrens: United States, 1997–2001.Morbidity and Mortality Weekly Report;Centers for Disease Control and Prevention:Atlanta, GA, 2003; Vol.52, p1.
2. Prenatal low-level lead exposure and developmental delay of infants at age 6 months (Krakow inner city study)
3. The European Parliament and the Council of the European Union; Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment. 2011/65/EU.
4. U.S. Department of Health and Human Services, Centers for Disease Control and Prevention:Atlanta, GA.
5. Electrothermal atomic absorption spectrometric determination of Al, Cu, Fe, Pb, V and Zn in clinical samples and in certified environmental reference materials