1. Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products
2. Regulation (EU) No 1169/2011 of the European Parliament and of the council of 25 October 2011 on the provision of food information to consumers
3. Recommendation 2011/696/EU of the European Commission of 18 October 2011 on the definition of nanomaterial
4. Linsinger TPJ, Roebben G, Gilliland D, Calzolai L, Rossi F, Gibson N, Klein C (2013) JRC Reference Report ‘Requirements on measurements for the implementation of the European Commission definition of the term ‘nanomaterial’ EUR25404EN,Publications Office of the European Union, Luxembourg, ISBN 978-92–79-25602-8
5. McCarthy J, Degueldre C (1993) Characterisation of environmental particles, Vol 2, 6th edn. Lewis Publishers, Chelsea MI, pp 247–315