Wenjiang, Huang, Wang Jihua, Wang Zhijie, Ma Zhihong, and Zhao Chunjiang. “Winter Wheat Geometry Identification by Bidirectional Canopy Reflected Spectrum”. International Journal of Agricultural and Biological Engineering 1, no. 2 (December 12, 2008): 27–31. Accessed January 28, 2026. https://ijabe.org/index.php/ijabe/article/view/9.