Diss 2008: 7-61
Fundstellen[]
Wikipedia Schlaf (2007): 8-16, 25-28- Borbely (1998): 7
- GBE (2005): 17-25, 28-31
- Peter et al. 2007: 8, 11, 17, 18
- approx: 25/55=45%
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MEHR ERFAHREN
Diss 2008: 7-61