Koy, Ayben, and Andaç Batur Çolak. “Predicting Stock Market Index and Credit Default Swap Spreads Using Artificial Intelligence and Determining Nonlinear Relations”. Archives of Advanced Engineering Science (July 31, 2025): 151–162. Accessed July 31, 2025. https://ojs.bonviewpress.com/index.php/AAES/article/view/1366.