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[2] ASTM Standard E-1392, "Standard practice for angle resolved optical scatter measurements on specular or diffuse surface."

[3] L. Li, H. Fukushima, K. Suzuki, and N. Suzuki, Proc. SPIE 6680, 668006 (2007).

[4] A Brner, L. Wiest, R. Reulke, R. Richter, P. Keller, M. Schaepman, and D. Schlopfer, ISPRS. Photogrammetry and Remote Sensing 55, 299 (2001).

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