1. Energy Efficiency in Buildings — Entertainment;Energy Efficiency Office,1989
2. Control of ventilation to conserve energy while maintaining acceptable indoor air quality;Kusuda;ASH RAE Trans.,1976
3. CIBSE Guide,1986
4. Automatic variable ventilation control systems based on air quality detection;Turiel,1979
5. Demand controlled ventilation;Strindehag;Air Infiltration Rev.,1989