Prapcoyo, Hari, Mohamad As'ad, Sujito Sujito, Sigit Setyowibowo, and Eni Farida. “Forecasting Performance of Double Exponential Smoothing Model and ETS Model for Predicting Crude Oil Prices”. Telematika: Jurnal Telematika dan Teknologi Informasi 20, no. 2 (June 30, 2023): 202–214. Accessed December 5, 2025. https://jurnal.upnyk.ac.id/index.php/telematika/article/view/8104.