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Economies of scope in European railways : an efficiency analysis
Growitsch, Christian; Wetzel, Heike - 2006
Persistent link: https://www.econbiz.de/10004880531
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The difficulty to behave as a (regulated) natural monopolist : the dynamics of electricity network access charges in Germany 2002 to 2005
Wein, Thomas; Wetzel, Heike - 2007
Persistent link: https://www.econbiz.de/10004890757
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Testing for Economies of Scope in European Railways : an effciency analysis
Growitsch, Christian; Wetzel, Heike - 2008
Persistent link: https://www.econbiz.de/10004900556
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Productivity growth in European railways : technological progress, efficiency change and scale effects
Wetzel, Heike - 2008
Persistent link: https://www.econbiz.de/10004924222
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Baumol's cost-disease, efficiency, and productivity in the performing arts : an analysis of German public theaters
Last, Anne-Kathrin; Wetzel, Heike - 2010
Persistent link: https://www.econbiz.de/10008688287