- Author: Gilbert J. P. McEwan, Gilbert McEwan, G. J. P. McEwan
- Language: English
- Year: 1982
- Author: Erkki Salonen
- Language: German
- Year: 1975
- Author: Heather D. Baker
- Language: English
- Year: 2004
- Author: Francis Joannès
- Language: French
- Year: 1982
- Author: Erkki Salonen
- Language: German
- Year: 1976