1. World Bank (1998) Ground-level ozone. Pollution Prevention and Abatement Handbook. http://documents.worldbank.org/curated/en/758631468314701365/pdf/multi0page.pdf
2. Royal Society (2010) Ground-level ozone in the 21st century: future trends, impacts and policy implications. Science Policy Report 15/08
3. Atkinson RW, Butland BK, Dimitroulopoulou C et al (2016) Long-term exposure to ambient ozone and mortality: a quantitative systematic review and meta-analysis of evidence from cohort studies. BMJ Open 6:e009493. doi: 10.1136/bmjopen-2015-009493
4. Vardoulakis S, Heaviside C (2014) Should we be concerned about the health effects from ozone? Presentation to the UK Natl. Air Qual. Conf. IAQM. 26 November 2014. Hatfield, London, UK.
5. UK DEFRA (2015) Consultation on draft plans to improve air quality: tackling nitrogen dioxide in our towns and cities. UK Department for Environment Food & Rural Affairs. UK Overview Document. https://consult.defra.gov.uk/airquality/air-quality-plan-for-tackling-nitrogen-dioxide/