Chivangulula, M., V. Torres, M. Varela, J. Morais, J. M?rio, L. S?nchez, and R. Gabriel. “Characterization of the Livestock Production Cooperative Systems in the Municipality of Ca?La, Huambo Province, Republic of Angola”. Cuban Journal of Agricultural Science, vol. 48, no. 2, June 2014, https://cjascience.com/index.php/CJAS/article/view/464.