BUDIANDRI, Eka; RAHADIAN, Dadan; BALTASAR, Sora; SAMPURNANINGSIH, Sri Retnaning. Digital and Legacy Telecommunications Efficiency in Indonesia: Evidence from a Two-Stage DEA. Greenation International Journal of Economics and Accounting, [S. l.], v. 4, n. 1, p. 72–87, 2026. DOI: 10.38035/gijea.v4i1.786. Disponível em: https://research.e-greenation.org/GIJEA/article/view/786. Acesso em: 13 may. 2026.