1. Achenbach H (2006) Der Wettbewerb im ÖPNV in Hessen am Beispiel des Rhein-Main-Verkehrsverbundes. In: in ifmo – Institut für Mobilitätsforschung (ed) Öffentlicher Personennahverkehr – Herausforderungen und Chancen. Springer Verlag, Berlin, pp 175–193
2. Alexandersson, G. and Pyddoke, R. (2003) ‘Bus deregulation in Sweden revisited: Experiences from 15 years of competitive tendering’, paper presented at the Eighth Conference on Competition and Ownership in Land Passenger Transport, Rio de Janeiro, September 14–18, 2003.
3. Amaral, M., Saussier, S. and Yvrande-Billon, A. (2006) ‘Does Competition for the Field Improve Cost Efficiency? Evidence from the London Bus Tendering Model’, Berlin University of Technology – Center for Network Industries & Infrastructure (ed.), CNI-Working Paper, no. 2006-14, September 13, 2006, Berlin, URL:
http://www.cni.tu-berlin.de/index.php?id=15
, retrieved August 10, 2009.
4. Amaral M, Saussier S, Yvrande-Billon A (2008) Auction procedures and competition in public services: The case of urban public transport in France and London. Utilities Policy 17(2):166–175
5. Augustin K, Walter M (2009) Operator changes through competitive tendering: Empirical evidence from German local bus transport. In: Nash C, Wolanski M, Veeneman W, van de Velde D (eds) Benchmarking the Competitive Tendering Outcome – Proceedings of the Eleventh International Conference on Competition and Ownership in Land Passenger Transport. Next Generation Infrastructures Foundation, Delft, pp 129–150