Technical Inefficiency of Smallholder Wheat Production System: Empirical Study from Northern Ethiopia. Ethiopian Journal of Economics, [S. l.], v. 27, n. 2, p. 151–171, 2020. Disponível em: http://ethiopianjournalofeconomics.org/index.php/EJE/article/view/203.. Acesso em: 4 jun. 2026.