- Author: Center for filosofi og videnskabsteori., Pahuus Mogens
- Language: Danish
- Year: 2001
- Author: Aage Hansen
- Language: Danish
- Year: 1967
- Author: Aage Hansen
- Language: Danish
- Year: 1967
- Author: Aage Hansen
- Language: Danish
- Year: 1967
- Author: Aage Hansen
- Language: Danish
- Year: 1933
- Author: Erik Hansen Jørn Lund
- Language: Danish
- Year: 1983
- Author: Anders Bjerrum
- Language: Danish
- Year: 1944
- Author: Christian Becker-Christensen
- Language: Danish
- Year: 2010