- Author: Frantisek Svec (auth.) Prof. Dr. Ruth Freitag (eds.)
- Language: English
- Year: 2002
- Author: Ruth Freitag (editor)
- Language: English
- Year: 2002
- Author: Ruth Freitag
- Language: English
- Year: 2003
- Author: A. T. Jackson (auth.) Dr. Ruth Freitag (eds.)
- Language: German
- Year: 1993
- Author: Ruth Freitag
- Language: English
- Year: 2002
- Author: Ruth Freitag
- Language: English
- Year: 2003
- Author: Ruth Freitag
- Language: English
- Year: 2002
- Author: Ruth Freitag
- Language: English
- Year: 2003
- Author: Ruth Freitag
- Language: English
- Year: 2003
- Author: Ruth Freitag (editor)
- Language: English
- Year: 2002