QUY, Nguyen Thi; DAO, Ha Thi Thieu. Technological Innovation, Economic Freedom and Environmental Degradation: New Evidence from Time-Varying Causality Analysis in Viet Nam. International Journal of Energy Economics and Policy, [S. l.], v. 15, n. 5, p. 188–195, 2025. DOI: 10.32479/ijeep.19955. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/19955. Acesso em: 5 dec. 2025.