Vu, Trang Huyen Thi, Van Nguyen, Phuong Thanh Le, and Thanh Ngo. “COVID-19 Crisis, Ownership and Bank Efficiency in Emerging Market Economies: An Empirical Study of Vietnam”. Economy of Regions 21, no. 4 (December 12, 2025): 1221–1232. Accessed December 17, 2025. https://www.economyofregions.org/ojs/index.php/er/article/view/1337.