Transfer learning for enhancing the generality of leaf spectroscopic models in estimating crop foliar nutrients across growth stages. - Yurong Huang; Wenqian Chen; Wei Tan; Yujia Deng; Cuihong Yang; Xiguang Zhu; Jian Shen; Nanfeng Liu (Int. J. Appl. Earth Obs. Geoinformation, 2025)