- Verkehrsverbund: The evolution and spread of fully integrated regional public transport in Germany, Austria, and Switzerland. In: International Journal of Sustainable Transportation, v. 13, n. 1 (Mai 2018). (2018):
- Vienna's path to sustainable transport. In: International Journal of Sustainable Transportation, v. 11, n. 4 (Dezember 2016). (2016):
- Sustainable Transport in Freiburg: Lessons from Germany's Environmental Capital. In: International Journal of Sustainable Transportation, v. 5, n. 1 (Januar 2011). (2011):
- Walking and Cycling for Healthy Cities. In: Built Environment, v. 36, n. 4 (Dezember 2010). (2010):