Long, Pham Dinh, and Ho Thi Mai Anh. “Innovation and Productivity of Vietnamese Small and Medium Enterprises: Firm Level Panel Data Evidence”. International Journal of Economics and Financial Issues 7, no. 3 (June 29, 2017): 226–232. Accessed November 24, 2024. https://mail.econjournals.com/index.php/ijefi/article/view/4467.