Santamaría-Guerra, J., E. Palacio-R, G. González-D, and I. Mariano. “TECHNOLOGICAL INNOVATION OF FAMILY FARMING PRODUCTION SYSTEMS INTHE NGABE-BUGLE”. Ciencia Agropecuaria, no. 23, Sept. 2015, pp. 1-19, http://200.46.165.126/index.php/ciencia-agropecuaria/article/view/119.