By Cullmann Astrid   Farsi Mehdi   Filippini Massimo   in Journal of Transport Economics and Policy (JTEP)

ISSN:0022-5258|46|1|51-66

Journal of Transport Economics and Policy‎(2012)‎

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By von Hirschhausen Christian   Cullmann Astrid   Kappeler Andreas   in Applied Economics

ISSN:1466-4283|38|21|2553-2566

Routledge Ltd‎(2006)‎

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