Rauf, A., Y. Ma, and A. Jalil. “Revisiting the Innovation-Export Nexus Using Industry-Level Data: Evidence from China’s Large- and Medium-Sized Industrial Enterprises”. International Journal of Economics and Financial Issues, vol. 9, no. 3, Apr. 2019, pp. 73-80, https://www.econjournals.com/index.php/ijefi/article/view/7942.