Jiancheng Li, Weimo Wu, Changwei Zhao, Xinlu Bai, Lijun Dong, Yujie Tan, MaYira Yusup, Guliye Akelebai, Helin Dong, Jinhu Zhi. "Effects of solar elevation angle on the visible light vegetation index of a cotton field when extracted from the UAV." Scientific Reports, 2025. doi:10.1038/s41598-025-00992-6