January 2009 - Degressiv-lineare Liberalisierung, in Privatbahnmagazin (German)
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With kind permission by www.privatbahn-magazin.com
January 2009 - Ohne die Infrastruktur ist alles nichts, in Privatbahnmagazin (German)
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With kind permission by www.privatbahn-magazin.com
December 2008 - A fair market needs regulation, Railway Gazette (English)
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With kind permission by www.railwaygazette.com
September 2008 - Comment in Privatbahnmagazin (German)
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With kind permission by www.privatbahn-magazin.com
September 2008 - Profile in Railway Gazette (English)
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With kind permission by www.railwaygazette.com
July 2008 - Profile in Privatbahnmagazin (German)
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With kind permission by www.privatbahn-magazin.com
July 2008 - Comment in Privatbahnmagazin (German)
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With kind permission by www.privatbahn-magazin.com
June 2008 - Profile in Ville et Transport (French)
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With kind permission by ville et transport