1. Building Bulletin BB 101, Ventilation of School Buildings—Version 1.4, Department of Education and Skills (DfES), London, July 2006.
2. Mental performance by secondary school pupils in relation to the quality of indoor air;Smedje,1996
3. Indoor environments in schools—pupils health and performance in regard to CO2 concentrations;Myhrvold,1996
4. D.A. Coley, R. Greeves, The effect of low ventilation rates on the cognitive function of a primary school class, Report R102 for DfES, Exeter University, 2004.
5. Associations between classroom CO2 concentrations and student attendance in Washington and Idaho;Shendell;Indoor Air,2004