- Author: Horst Scheibert
- Language: English
- Year: 1994
- Author: Heinz J. Nowarra
- Language: English
- Year: 1989
- Author: Walter J. Boyne
- Language: English
- Year: 1994
- Author: Willy Radinger
- Language: English
- Year: 1993
- Author: Bernd Barbas
- Language: English
- Year: 1995
- Author: Bernd Barbas
- Language: English
- Year: 1995
- Author: Jon A. Maguire
- Language: English
- Year: 1995
- Author: Richard M. Bueschel
- Language: English
- Year: 1995