1. LT Method Version 2.0;Baker,1994
2. CIE, 1973. Standardisation of luminous distribution on clear skies. CIE publication no. 022
3. CIE, 1996. Spatial distribution of daylight––CIE Standard Overcast Sky and Clear Sky. CIE S 003/E-1996
4. CIE, 2002. Spatial distribution of daylight––CIE Standard General Sky. CIE DS 011.2/E-2002
5. Energy Simulation in Building Design;Clarke,2001