Reciprocity of the bidirectional reflectance distribution function (BRDF) in measurements and models of structured surfaces. - William C. Snyder (IEEE Trans. Geosci. Remote. Sens., 1998)

BRDF models to predict spectral reflectance and emissivity in the thermal infrared. - William C. Snyder; Zhengming Wan (IEEE Trans. Geosci. Remote. Sens., 1998)

Definition and invariance properties of structured surface BRDF. - William C. Snyder (IEEE Trans. Geosci. Remote. Sens., 2002)