- Author: Joachim Schiffers, Eckhard Wälzholz, Bert Tillmann
- Language: German
- Year: 2008
- Author: Sebastian Spiegelberger, Wolfgang Spindler, Eckhard Wälzholz
- Language: German
- Year: 2008
- Author: Christoph Rupp, Joachim Schiffers, Eckhard Wälzholz, Gabriel Recnik, Bert Tillmann, Willi Winter
- Language: German
- Year: 2015
- Author: Sebastian Spiegelberger (editor), Ulrich Schallmoser (editor), Eckhard Wälzholz (editor), Thomas Wachter (editor)
- Language: German
- Year: 2022
- Author: Lambertus J. Fuhrmann (editor), Eckhard Wälzholz (editor)
- Language: German
- Year: 2022