Krimm, Jochen, Ulrich Knaack, and Holger Techen. “Updated Urban Facade Design for Quieter Outdoor Spaces”. Journal of Facade Design and Engineering 5, no. 1 (January 1, 2017): 63–75. Accessed April 3, 2025. https://jfde.eu/index.php/jfde/article/view/64.