A. Ruswanto, A. Handono Ramelan, D. Praseptiangga, and I. Bagus Banyuro Partha, “Effects of Ripening Level and Processing Delay on the Characteristics of Oil Palm Fruit Bunches”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 10, no. 1, pp. 389–394, Feb. 2020.