1. 2015 http://ec.europa.eu/health/scientific_committees/emerging/docs/scenihr_o_041.pdf
2. 2009a http://ec.europa.eu/health/archive/ph_risk/committees/04_scenihr/docs/scenihr_o_022.pdf
3. 2009b http://ec.europa.eu/health/archive/ph_risk/committees/04_scenihr/docs/scenihr_o_024.pdf
4. 2012 http://ec.europa.eu/health/scientific_committees/emerging/docs/scenihr_s_001.pdf