- Author: McLeod John
- Language: English
- Year: 2008
- Author: Stavemann Harlich H
- Language: German
- Year: 2011
- Author: Staemmler Frank-M
- Language: German
- Year: 2016
- Author: Schäfer Simone
- Language: German
- Year: 2016
- Author: Reddemann Luise, Spangenberg Ellen
- Language: German
- Year: 2017
- Author: König Oliver, Mattke Dankwart, Streeck Ulrich
- Language: German
- Year: 2015
- Author: Brüggemann Helga, Ehret-Ivankovic Kristina, Klütmann Christopher
- Language: German
- Year: 2012
- Author: Barnowski-Geiser Waltraut, Geiser-Heinrichs Maren
- Language: German
- Year: 2017
- Author: Bradley T. Erford
- Language: English
- Year: 2015