Liu, Y., Lyu, Q., He, S., Yi, S., Liu, X., Xie, R., … Deng, L. (2015). Prediction of nitrogen and phosphorus contents in citrus leaves based on hyperspectral imaging. International Journal of Agricultural and Biological Engineering, 8(2), 80–88. https://doi.org/10.25165/ijabe.v8i2.1464