Song, L. ., W. . Ye, S. . Wang, S. . Liu, M. . Wang, G. . Su, and H. . Bi. “Development and Test of Rice Nitrogen Nutrition Index Estimation Model Based on Airborne Multi-Spectrum”. Bangladesh Journal of Botany, vol. 52, no. 20, Aug. 2023, pp. 529-38, doi:10.3329/bjb.v52i2.68217.