“Circular economy, motivations for its adoption, and the main challenges in its implementation ‘A presentation of the German experience (2017-2020)’”, renaf, vol. 20, no. 34, pp. 1–16, Jun. 2025, Accessed: Oct. 23, 2026. Available: https://journals.univ-chlef.dz/index.php/renaf/article/view/217