Rahul Thekkedath, Shiji Kavungal, and Muhammed Anvar P. “Product Autoregressive Models: Review of Properties, Estimation Methods and Applications”. Austrian Journal of Statistics 54, no. 4 (May 28, 2025): 1–21. Accessed October 8, 2025. https://www.ajs.or.at/index.php/ajs/article/view/2010.