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Part, Chapter, Paragraph
1 II, 5. 5. 3| Rigby, Frazzica, Sjöström, Hillger, Neumann, Kirch : Challenges
2 II, 5. 5. 3| Frazzica R.G, Sjöström M, Hillger C, Neumann G, Kirch W (in
3 II, 9. 2. 7| Alexander D, Rigby M, Hillger C, Neumann G, Kirch W (2008):
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