1. NIOSH. Building air quality—a guide for building owners and facility managers, 1991.
2. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. Cleaning code for air duct system in heating, ventilating and air-conditioning systems (GB 19210-2003), 2003.
3. Ministry of Health of the People's Republic of China. The report of the inspection of public HVAC systems by Ministry of Health, PRChina, 2004.
4. Modeling particle loss in ventilation ducts;Sippola;Atmospheric Environment,2003
5. Experiment measuring particle deposition from fully developed turbulent flow in ventilation ducts;Sippola;Aerosol Science and Technology,2004