1. Absatzplanung von ÖPNV-Ticketarten bei differenzierter Preispolitik;Albers;Zeitschrift für Verkehrswissenschaften,1996
2. Free public transport;Baum;Journal of Transport Economics and Policy,1973
3. Discrete Choice Analysis: Theory and Application to Travel Demand;Ben-Akiva,1985
4. A column-generation approach to line planning in public transport;Borndörfer;Transportation Science,2007
5. Optimal fares for public transport;Borndörfer,2006