Mateus, Cesario ORCID: 0000-0003-0336-5219 and Hoang, Bao Trung ORCID: 0000-0003-1130-0300 (2021) Frontier markets, liberalization and informational efficiency: evidence from Vietnam. Asia-Pacific Financial Markets, 28 (4). pp. 499-526. ISSN 1387-2834 (Print), 1573-6946 (Online) (doi:https://doi.org/10.1007/s10690-021-09333-9)