Villaverde, José, and Adolfo Maza. “The Role of Spillovers in Okun’s Law: Empirical Evidence from Spain”. Panoeconomicus 68, no. 4 (September 15, 2021): 507–530. Accessed September 20, 2024. http://mail.panoeconomicus.org/index.php/jorunal/article/view/784.