Duncan, A.J., S.A. Tarawali, P.J. Thorne, D. Valbuena, K. Descheemaeker, and S. Homann-Kee Tui. “Integrated Crop-Livestock Systems − a Key to Sustainable Intensification in Africa”. Tropical Grasslands-Forrajes Tropicales 1, no. 2 (December 20, 2013): 202–206. Accessed April 30, 2024. https://www.tropicalgrasslands.info/index.php/tgft/article/view/TGFT%281%29202-206.