Mittenzwei, Klaus, Wolfgang Britz, and Christine Wieck. “Does the ‘green box’ of the European Union Distort Global Markets?”. Bio-based and Applied Economics 3, no. 1 (February 28, 2014): 1–20. Accessed April 24, 2024. https://oaj.fupress.net/index.php/bae/article/view/3248.