Lanfranchi, Maurizio, Emanuele Schimmenti, Maria Gabriella Campolo, and Carlo Giannetto. “The Willingness to Pay of Sicilian Consumers for a Wine Obtained With Sustainable Production Method: An Estimate through an Ordered Probit Sample-Selection Model”. Wine Economics and Policy 8, no. 2 (December 31, 2019): 203–215. Accessed April 25, 2024. https://oaj.fupress.net/index.php/wep/article/view/8212.