E. G. Martínez-González, M. Muñoz-Rodríguez, V. H. Santoyo-Cortés, D. Gómez-Pérez, and J. R. Altamirano-Cárdenas, “Lessons on the promotion of goat projects through the strategic food security program in Guerrero, México”, ASYD, vol. 10, no. 2, pp. 177–193, Oct. 2013.