Shang, Jin, Tamotsu Nakamura, and Shigeyuki Hamori. “Does the Sentiment Index Help Predict Crude Oil Prices?”. IETI Transactions on Data Analysis and Forecasting (iTDAF) 1, no. 1 (April 3, 2023): pp. 54–65. Accessed April 20, 2024. https://online-journals.org/index.php/iTDAF/article/view/32683.