1. HVAC Control Systems: Modelling, Analysis and Design;Underwood,1999
2. PI control of fan speed to maintain constant discharge pressure;Krakow;ASHRAE Transactions,1995
3. Automatic tuning of digital controllers with applications to HVAC plants;Åström;Automatica,1993
4. Adaptive Control;Landau,1998
5. Process Dynamics and Control;Seborg,1989