1. The rise of low-cost sensing for managing air pollution in cities
2. 2008/50/EC: Directive of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europehttp://eurlex.europa.eu/Result.do?RechType=RECH_celex&lang=en&code=32008L0050
3. Ambient Air—Standard Gravimetric Measurement Method for the Determination of the PM10 or PM2,5 Mass Concentration of Suspended Particulate Matter (EN 12341:2014),2014
4. Standard Method for the Measurement of the Concentration of Carbon Monoxide by Non-Dispersive Infrared Spectroscopy, (EN 14626:2012),2012
5. Standard Method for the Measurement of the Concentration of Nitrogen Dioxide and Nitrogen Monoxide by Chemiluminescence (EN 14211:2012),2012