Ahlmeyer, Florian, and Dirk Wittowsky. “What Do We Need in Rural Areas? How to Use Accessibility Modelling As a Strategy in Transport Planning”. Raumforschung Und Raumordnung | Spatial Research and Planning, vol. 76, no. 6, Dec. 2018, pp. 531–550, https://doi.org/10.1007/s13147-018-0558-8.