Two‑Stage DEA Assessment of Knowledge‑to‑Economy Efficiency in GCC Countries Using the Global Knowledge Index, 2021–2024. International Journal of Financial, Administrative and Economic Sciences, [S. l.], v. 5, n. 4, 2026. DOI: 10.59992/IJFAES.2026.v5n4p1. Disponível em: https://www.vsrp.co.uk/index.php/ijfaes/article/view/1795. Acesso em: 30 aug. 2026.