KHALID ABDALLA, Murtada. Cointegeration of Livestock Markets in Sudan:Panel Data Analysis (2000-2015). مجلة البطانة للعلوم الإنسانية والإجتماعية, [S. l.], n. 22, p. 154–177, 2023. Disponível em: https://ojs.albutana.edu.sd/index.php/jhss/article/view/206. Acesso em: 30 ديسمبر. 2025.