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19by F. Rohrer, B. Bohn, T. Brauers, D. Brüning, F.-J. Johnen, A. Wahner, J. KleffmannGet full text
Published 2005-01-01
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20by Sandra Johnen, Frank Meißner, Mario Krug, Thomas Baltz, Ingolf Endler, Wilfried Mokwa, Peter WalterGet full text
Published 2016-01-01
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