1. A. Roos, Coordinator, Angle Dependent Optical Properties Measurements (ADOPT), Commission of the European Communities, Standards, Measurement and Testing Programme, DG XII, Contract No. SMT4-CT96-2138.
2. International Standard ISO 9050, ISO/TC 160, Glass in Building: Determination of Light Transmittance, Solar Direct Transmittance, Energy Transmittance and Ultra-violet Transmittance, and Related Glazing Factors, Switzerland, 1990; BS EN 410 Glass in Building — Determination of luminous and solar characteristics of glazing, 1998.
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4. P.A. van Nijnatten, in: A. Sayigh (Ed.), Renewable Energy, Proc. World Renewable Energy Congress VI, 2000, pp. 171–176.
5. Angular-dependent spectral optical properties of architectural glazings: results of an interlaboratory comparison of measurements