NIJKAMP, Peter, and Sytze A. RIENSTRA. “The Pivotal Role of the Private Sector in Achieving Transport Policy Objectives”. European Spatial Research and Policy 5, no. 2 (December 30, 1998): 5–21. Accessed February 9, 2026. https://czasopisma.uni.lodz.pl/esrap/article/view/24846.