Collantes-G., R., J. Lezcano-B., L. Marquínez-B., and A. Ibarra. “CHARACTERIZATION OF ROBUSTA COFFEE FARMS IN THE PROVINCE OF COLON, PANAMA”. Ciencia Agropecuaria, no. 31, Dec. 2020, pp. 156-68, http://200.46.165.126/index.php/ciencia-agropecuaria/article/view/307.