1. World Health Organization, WHO (2000) Air quality guidelines. 2nd edition. Chap. 5.9. pp. 92–96. Regional Office for Europe. WHO regional publications, European series, No. 91. Copenhagen (Denmark).
2. World Health Organization, WHO (2010) Polynuclear aromatic hydrocarbons. In: WHO Guidelines for indoor air quality. Selected Pollutants. Chap. 6. pp. 289–346. Regional Office for Europe. Copenhagen (Denmark).
3. European Commission, EC (2001) Ambient air pollution by polycyclic aromatic hydrocarbons (PAH). Position Paper. Chap. 5. pp. 47-49. July 2001. Office for Official Publications of the European Communities, Luxembourg.
4. HBM4EU (2018) Scoping document on prioritized substance group: PAHs and air pollutants. 1st edition. Chap. 2. pp. 12–16. December 2018. AUTH Chemical group leader. HBM4EU Project of the European Union’s Horizon 2020 programme: Science and policy for a health future. German Environment Agency, Section II 1.2 Toxicology, Health Related Environmental Monitoring.
5. OSPAR Commission (2009) Background document on polycyclic aromatic hydrocarbons (PAHs), update 2009. Hazardous Substances Series. The Executive Secretary. London, United Kingdom.