By Weber Christoph   Vogel Philip   in International Journal of Global Energy Issues

ISSN:0954-7118|29|1-2|162-180

Inderscience Publishers‎(2007)‎

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By Himmes Patrick   Vogel Philip   Weber Christoph   Laskowski Michael   Dietze Uwe   in uwf UmweltWirtschaftsForum

ISSN:0943-3481|16|3|143-147

Springer Publishing Company ‎(2008)‎

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