Wang, Qiyun. “Asymmetric Effects of the COVID-19 Pandemic on Out-Migration Scale: A Study Based on the Nonlinear ARDL Model”. World Scientific Research Journal 12, no. 7 (July 16, 2026): 28–35. Accessed July 16, 2026. https://wsr-j.org/index.php/ojs/article/view/128.