- Author: Enrico Bombieri Walter Gubler
- Language: English
- Year: 2007
- Author: Bombieri E. Gubler W.
- Language: English
- Year: 2006
- Author: Enrico Bombieri Walter Gubler
- Language: English
- Year: 2007
- Author: Bombieri E. Gubler W.
- Language: English
- Year: 2006