Kubitzki, Sabine, and Stephanie Krischik-Bautz. “Does the Consumer Really Knows Which Quality He Buys? A Study about the Expected Quality from Quality Labels”. German Journal of Agricultural Economics 60, no. 1 (March 1, 2011). Accessed November 22, 2024. https://www.tib-op.org/ojs/index.php/gjae/article/view/1832.