1. Usha S et al (2012) Is CO2 an indoor pollutant? Direct effects of low-to-moderate CO2 concentrations on human decision-making performance. Environ Health Perspect 120(12):1671–1677
2. Maripuu M-L, Afshari A (2009) Demand controlled ventilation systems, state-of-the-art review, report. Chalmers University of Technology, Gothenburg
3. Liteplo RG, Beauchamp R, Meek ME, Chénier R (2002) Concise international chemical assessment document 40: formaldehyde. World Health Organization, Geneva
4. Directive EU (2004) Directive 2004/42/CE of the European Parliament and of the Council of 21 April 2004 on the limitation of emissions of volatile organic compounds due to the use of organic solvents in certain paints and varnishes and vehicle refinishing products amending Directive 1999/13/EC. Off J Eur Union L 143 pp 0087–0096
5. Namieśnik J, Górecki T, Kozdroń-Zabiega ła B, Łukasiak J (1992) Indoor air quality (IAQ), pollutants, their sources and concentration levels. Build Environ 27(3):339–356