- Author: Gerd Tenzer Heinz Uhlig (Hrsg.)
- Language: German
- Year: 1991
- Author: Wilhelm Krusch
- Language: German
- Year: 1993
- Author: Eberhard Witte (Hrsg.)
- Language: German
- Year: 1990
- Author: Hans Stekle (Hrsg.)
- Language: German
- Year: 1985
- Author: Walter Tietz (Übersetzer) ITU CCITT
- Language: German
- Year: 1985
- Author: Bernhard Baer Thomas Pinegger
- Language: German
- Year: 1991
- Author: Jörn Kruse (Hrsg.)
- Language: German
- Year: 1992
Computer-Fiebel
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- Author: Karl Bolle
- Language: German
- Year: 1981
- Author: Norbert Dauth (Hrsg.)
- Language: German
- Year: 1978
- Author: Franz Arnold (Hrsg.)
- Language: German
- Year: 1981