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Physical Review B Physical review / B, 87 87 (2013 2013) 6 6, S. 060404 060404
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Physical Review B Physical review / B, 87 87 (2013 2013) 2 2, S. 024420 024420
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Physical Review A Physical review / A, 88 88 (2013 2013) 4 4, S. 046501 046501
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Physical Review B Physical review / B, 87 87 (2013 2013) 4 4, S. 041403 041403
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