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- Language: Danish
- Year: 2011
- Author: Christian Becker-Christensen
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- Year: 2010
- Author: Heine Andersen
- Language: Danish
- Year: 1994
- Author: Vibeke Ankersborg
- Language: Danish
- Year: 2011
- Author: Hanne Leth Andersen Tine Wirenfeldt Jensen
- Language: Danish
- Year: 2007
- Author: Tove Basballe Susanne Leleur Lisbeth Helm Thomsen
- Language: English
- Year: 1984
- Author: Gesteland Richard R
- Language: English
- Year: 2012