Ortuzar-Gana, J. C., and O. Alfranca-Burriel. “Current and Regular Prices Hedonic Models for the Wine Industry”. Spanish Journal of Agricultural Research 8, no. 4 (December 1, 2010): 873-886. Accessed August 1, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/1381.