//-->
Productivity growth in European railways : technological progress, efficiency change and scale effects
Wetzel, Heike, (2008)
European railway reforms and efficiency : review of evidence in the literature
Fitzová, Hana, (2017)
Efficiency determinations of the worldwide railway companies via DEA and contributions of the outputs to the efficiency and TFP by panel regression
Kabasakal, Ali, (2015)
Regulation and cost efficiency in the European railways industry
Urdánoz, Miguel, (2013)
The industrial organization of competition in local bus services
Gagnepain, Philippe, (2011)