Erdy Sulino bin Mohd Muslim Tan, et al. “Analysis of NGBoost and XGBoost for Added Amount Fertilizer (NPK) Prediction: Uncertainty Estimation and Model Performance in Precision Agriculture”. Advanced and Sustainable Technologies (ASET), vol. 4, no. 2, Dec. 2025, pp. 385-02, doi:10.58915/aset.v4i2.2706.