Guspa, M., M. Makky, S. Santosa, and D. Cherie. “Non-Destructive Evaluation of Oil and Free Fatty Acid Content of Oil Palm Fresh Fruit Bunch Based on Thermal Properties Using Partial Least Square (PLS)”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 13, no. 3, Aug. 2024, pp. 772-81, doi:10.23960/jtep-l.v13i3.772-781.