Pdf — Astm E2109-01
References: ASTM E2109-01. (2001). Standard Test Methods for Evaluating the Luminous Reflectance and Color of Surfaces by Use of a Spectrophotometer. American Society for Testing and Materials.
References: ASTM E2109-01. (2001). Standard Test Methods for Evaluating the Luminous Reflectance and Color of Surfaces by Use of a Spectrophotometer. American Society for Testing and Materials.