“Investigating the Co-movement of Cocoa and Coffee Prices in International Markets:  Evidence from Non-linear Autoregressive Distributed Lag Model and Rolling Window Methods”, J. Asian Dev. Studies, vol. 12, no. 4, pp. 34–55, Dec. 2023, Accessed: Jul. 24, 2026. [Online]. Available: https://poverty.com.pk/index.php/Journal/article/view/23