1. Reflectance Spectroscopy: Principles, Methods, Applications;Kortüm,1969
2. Diffuse reflectance spectroscopy;Frei,1975
3. Diffuse Reflectance and Transmittance;Höpe,2014
4. Lambert’s Photometrie. Photometria Sive De Mensura Et Gradibus Luminis, Colorum et Umbrae (1760);Lambert,1892
5. Traité D’optique sur la Gradation de la Lumiere;Bouguer,1760