Fernández-Olmos, M., J. Rosell Martínez, and M.A. Espitia-Escuer. “The Relationship Between Product Quality and Transaction Costs With Vertical Coordination in DOC [Qualified Designation of Origin] Rioja Winegrape Industry”. Spanish Journal of Agricultural Research 7, no. 2 (June 1, 2009): 281-293. Accessed July 31, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/419.