- Author: Dirk Ehlers (editor), Ulrich Becker (editor), Et al. (editor)
- Language: German
- Year: 2011
- Author: Ulrich Becker (editor), Markus Roth (editor)
- Language: German
- Year: 2012
- Author: Ulrich Becker Zdravka Metz
- Language: Esperanto
- Year: 2009
- Author: Dirk Ehlers (editor), Ulrich Becker (editor), Et al. (editor)
- Language: English
- Year: 2007
- Author: Ulrich Becker
- Language: German
- Year: 1963
- Author: Ulrich Becker (editor) Anastasia Poulou (editor)
- Language: English
- Year: 2021
- Author: Ulrich Becker (auth.) Prof. Eyal Benvenisti Prof. Dr. Georg Nolte (eds.)
- Language: English
- Year: 2004
- Author: Ulrich Becker (auth.)
- Language: German
- Year: 1994