Fransiska, Sintia, and Ismail Husein. “Cocoa Price Prediction in North Sumatra Using Singular Spectrum Analysis (SSA) Algorithm”. Sinkron : jurnal dan penelitian teknik informatika 7, no. 3 (July 2, 2023): 1587-1598. Accessed May 10, 2026. https://jurnal.polgan.ac.id/index.php/sinkron/article/view/12559.