Biophysical Information in Asymmetric and Symmetric Diurnal Bidirectional...
Vanderbilt, V., S. Ustin, K. M. Berger, W. F. Caldwell, J. A. Clark, B. D. Ganapol, E. Kasischke, S. N. Martens, R. E. Pettigrew, and R. A. Rousseau (1991), Biophysical Information in Asymmetric and Symmetric Diurnal Bidirectional Canopy Reflectance, IEEE Trans. Geosci. Rem. Sensing, 29.6, 875-889.