1. Roule, C. A. et al. Why, when and how do HVAC-systems pollute the indoor environment and what to do about it? The European AIRLESS project, Building and Environment. 38 (1), 209–225 (2003).
2. Liu, Y. The control technology of microbial contamination in air conditioning system. Frozen. 83 (973), 28–35 (2008).
3. Zhang, Y. P. et al. Overview of biological pollution prevention methods in air conditioning system. Heating Ventilating and Air Conditioning. 33, 41–46 (2003).
4. Parat, S., Perdrix, A. & Baconnier, P. Relationships between air conditioning, airborne microorganisms and health. Bulletin de l’Academie nationale de medecine. 183 (2), 327–42, discussion 342–4 (1998).
5. Lv Yang, Hu G.Y. A Review of the Biological Pollution Characteristics, Standards and Prevention and Control Technologies of Central Air-Conditioning System, Building Science. 32 (6), 151–158 (2016).