- Author: Dr. Hariolf Grupp (auth.) Dr. Hariolf Grupp (eds.)
- Language: German
- Year: 1995
- Author: Professor Dr. Ashish Sen Professor Dr. Tony E. Smith (auth.)
- Language: English
- Year: 1995
- Author: Professor Dr. Alessandro Birolini (auth.)
- Language: English
- Year: 1994