- Author: Robert Mailhammer
- Language: English
- Year: 2021
- Author: Robert Mailhammer
- Language: English
- Year: 2021
- Author: Robert Mailhammer (editor)
- Language: English
- Year: 2013
- Author: Robert Mailhammer
- Language: English
- Year: 2007
- Author: Robert Mailhammer, Theo Vennemann
- Language: English
- Year: 2019
- Author: Ursula Lenker Judith Huber Robert Mailhammer
- Language: English
- Year: 2010
- Author: Robert Mailhammer
- Language: English
- Year: 2013
- Author: Robert Mailhammer
- Language: English
- Year: 2007