Rosdisham Endut, Mohd Shafiq Amirul Sabri, Syed Alwee Aljunid, Norshamsuri Ali, Abdur Rehman Laili, and Muhammad Hafiz Laili, “Prediction of Potassium (K) Content in Soil Analysis Utilizing Near-Infrared (NIR) Spectroscopy”, J. Adv. Res. Appl. Sci. Eng. Tech., vol. 33, no. 1, pp. 92–101, Oct. 2023.