1. Li, X., Strahler, A., Geometric-optical modeling of a coniferous forest canopy,IEEE Trans. on Geoscience and Remote Sensing, 1985, GE-23(5): 207.
2. Li, X., Wang, J., Strahler, A., Apparent reciprocity failure in directional reflectance of structured surface,Progress in Natural Science, 1999, 9(10): 747.
3. Girolamo, L., Vanai, T., Davies, R., The apparent breakdown of reciprocity in reflected solar radiance,JGR (Atm.), 1998, 103: 8795.
4. Becker, F., Li, Z., Surface temperature and emissivity at various scale: Definition, measurement, and related problems,Remote Sensing Review, 1995, 12: 225.
5. Wan, Z., Dozier, J., A generalized split-window algorithm for retrieving land-surface temperature from space,IEEE Trans. on GARS, 1996, 34(4): 892.