- Author: Detlef Garbe Klaus Lange (auth.) Dr. Detlef Garbe Dr. Klaus Lange (eds.)
- Language: German
- Year: 1991
- Author: Edelgard Gruber (auth.) Dr. Hariolf Grupp Dr. Thomas Schnöring (eds.)
- Language: German
- Year: 1991
- Author: Dr. Günter Pfeiffer Dr. Bernhard Wieland (auth.)
- Language: English
- Year: 1990
- Author: Hermann Josef Schuster (auth.) Dr. jur. Hermann Josef Schuster (eds.)
- Language: German
- Year: 1990
- Author: Prof. Dr. Wilhelm Pompl (auth.)
- Language: German
- Year: 1989
- Author: Dr. Cornelia Neff (auth.)
- Language: English
- Year: 2003