Note 1 to entry: See also "colour-matching coefficients".

Note 2 to entry: The colour-matching functions can be used to calculate the tristimulus values of a colour stimulus from its colour stimulus functions φ_λ(λ).

Note 3 to entry: See also CIE 15, Colorimetry.

Note 4 to entry: See also ISO/CIE 11664-1, Colorimetry – Part 1: CIE Standard Colorimetric Observers.

Note 5 to entry: In the CIE standard colorimetric systems, the colour-matching functions are represented by the symbols $\overline{x}(\lambda ),\overline{y}(\lambda ),\overline{z}(\lambda )$ and ${\overline{x}}_{10}(\lambda ),{\overline{y}}_{10}(\lambda ),{\overline{z}}_{10}(\lambda )$.

Note 6 to entry: This entry was numbered 845-03-23 in IEC 60050-845:1987.