Market Integration and Efficiency in the Presence of Cross-Border Trade Restrictions: Evidence from Selected Maize Markets in Southern Africa. (82). Tropical Agriculture, [S. l.], v. 85, n. 1, 2008. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/1080.. Acesso em: 20 may. 2024.