- Author: ROLAND KELLER
- Language: English
- Year: 1996
- Author: Herbert Pfister, Julian B. Barbour
- Language: English
- Year: 1995
- Author: Georg C. Bertsch
- Language: English
- Year: 2002
- Author: "Topos - European Landscape Magazine" (editor)
- Language: German
- Year: 2002
- Author: Werner Blaser etc.
- Language: English
- Year: 2001
- Author: Klaus-Dieter Weiss
- Language: English
- Year: 1998
- Author: Enrique Larranaga
- Language: English
- Year: 2003
- Author: Arif Salimov
- Language: English
- Year: 2023
- Author: Liliane Wong
- Language: English
- Year: 2023
- Author: Sappho Andreas Bagordo
- Language: German
- Year: 1944