Zijlstra, Toon, Thomas Vanoutrive, and Ann Verhetsel. “A Meta-Analysis of the Effectiveness of Park-and-Ride Facilities”. European Journal of Transport and Infrastructure Research 15, no. 4 (September 1, 2015). Accessed November 28, 2021. https://journals.open.tudelft.nl/ejtir/article/view/3099.