The Determinants of Technical Efficiency of Farmers in Teff, Maize and Sorghum Production: Empirical Evidence from Central Zone of Tigray Region. Ethiopian Journal of Economics, [S. l.], v. 23, n. 2, p. 1–36, 2015. Disponível em: https://ethiopianjournalofeconomics.org/index.php/EJE/article/view/147.. Acesso em: 15 jul. 2026.