Eriksen, Frederik Bruun, and Aliakbar Kamari. “The Potential of Voluntary Sustainability Class to Leverage Sustainability in the Danish Construction Industry”. Green Building & Construction Economics 4, no. 1 (May 9, 2023): 48–62. Accessed May 6, 2024. https://ojs.wiserpub.com/index.php/GBCE/article/view/2266.