Arana-Coronado, J. J., J. Bijman, O. Omta, and A. G. J. M. Oude Lansink. “Contractual Arrangements and Food Quality Certifications in the Mexican Avocado Industry”. Spanish Journal of Agricultural Research, Vol. 11, no. 1, Mar. 2013, pp. 3-18, doi:10.5424/sjar/2013111-2889.