Tran, Loan, and Hung Bui. “IMPACT OF MANAGERIAL FACTORS ON FIRM PRODUCTIVITY”. VNUHCM Journal of Science and Technology Development 12, no. 15 (September 15, 2009): 73-86. Accessed June 1, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2350.