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Transport and CO2: Productivity Growth and Carbon Dioxide Emissions in the European Commercial Transport Industry
Krautzberger, Lisann; Wetzel, Heike - In: Environmental & resource economics 53 (2012) 3, pp. 435-455
Persistent link: https://www.econbiz.de/10010033793
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Verbundvorteile fuer den Boersengang der Deutschen Bahn ausreichend beruecksichtigt?
Growitsch, Christian; Wetzel, Heike - In: Wirtschaft im Wandel 12 (2006) 8, pp. 235-241
Persistent link: https://www.econbiz.de/10007297660
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Testing for Economies of Scope in European Railways: An Efficiency Analysis
Growitsch, Christian; Wetzel, Heike - In: Journal of transport economics and policy 43 (2009) 1, pp. 1-24
Persistent link: https://www.econbiz.de/10008176639
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Efficiency effects of observed and unobserved heterogeneity: Evidence from Norwegian electricity distribution networks
Growitsch, Christian; Jamasb, Tooraj; Wetzel, Heike - In: Energy economics 34 (2012) 2, pp. 542-549
Persistent link: https://www.econbiz.de/10009836239