- Author: Maik Adomssent, Jasmin Godemann, Gerd Michelsen
- Language: English
- Year: 2007
- Author: Matthias Barth Gerd Michelsen Marco Rieckmann Ian Thomas
- Language: English
- Year: 2015
- Author: Harald Heinrichs, Pim Martens, Gerd Michelsen, Arnim Wiek
- Language: English
- Year: 2015
- Author: Harald Heinrichs Pim Martens Gerd Michelsen & Arnim Wiek
- Language: English
- Author: Harald Heinrichs Gerd Michelsen (eds.)
- Language: German
- Year: 2014
- Author: Philipp Mayring (auth.) Dietmar Bolscho Gerd Michelsen Bolscho (eds.)
- Language: German
- Year: 1999
