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3. IEA hydrogen implementing agreement: large-scale hydrogen delivery infrastructure: final report expert group task 28;Weeda,2015
4. Energy concept for an environmentally sound, reliable and affordable energy supply, 28 September, Berlin, Germany;Federal Ministry of Economics and Technology; Federal Ministry for the Environment, Nature Conservation and Nuclear Safety,2010
5. The mobility and fuels strategy of the German Government (MFS): new pathways for energy, June, Berlin, Germany;Federal Ministry of Transport, Building and Urban Development,2013