Kinigadner, Julia, David Vale, Benjamin Büttner, and Gebhard Wulfhorst. “Shifting Perspectives: A Comparison of Travel-Time-Based and Carbon-Based Accessibility Landscapes”. Journal of Transport and Land Use 14, no. 1 (March 14, 2021): 345-365. Accessed May 5, 2021. https://jtlu.org/index.php/jtlu/article/view/1741.