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http://cordis.europa.eu/
(Abschlussbericht, Auftrag ENK6-CT-2002-000611)
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http://www.alacaes.com/
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4. Allen RD, Doherty TJ, Kannberg LD (1985) Summary of Selected Compressed Air Energy storage Studies. Pacific Northwest Laboratory, Richland, WA, p 112
5. Auer J (2012) Moderne Stromspeicher: Unverzichtbare Bausteine der Energiewende.
http://www.dbresearch.de/PROD/DBR_INTERNET_DE-PROD/PROD0000000000284196.PDF