1. Reference Data;CIBSE,1986
2. Fundamentals;ASHRAE,1989
3. A new method for determination of velocity pressure loss-factors for HVAC system components;Cheong,1992
4. Determination of k-factors by measurement and CFD modelling;Riffat,1994
5. CFD for improvement of k-factor accuracy in HVAC systems;Shao,1994