Cendón, M.L., Sanz-Cañada, J. and Lucena-Piquero, D. 2014. Differential quality and technical/managerial advice relationships in Andalusian (Spain) olive oil protected designations of origin. Spanish Journal of Agricultural Research. 12, 4 (Oct. 2014), 869-888. DOI:https://doi.org/10.5424/sjar/2014124-6026.