V. Mellyana, I. W. Budiastra, Irmansyah, and Y. A. Purwanto, “Electrical Properties for Non-destructive Determination of Free Fatty Acid and Moisture Content in Oil Palm Fruit”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 14, no. 2, pp. 641–649, Apr. 2024.