- Author: Josef Trappel, Werner A. Meier, Leen d’Haenens, Jeanette Steemers, Barbara Thomass
- Language: English
- Year: 2011
- Author: Ilija Tomanić Trivundža Hannu Nieminen Nico Carpentier Josef Trappel
- Language: English
- Year: 2018
- Author: Josef Trappel (Ed.)
- Language: English
- Year: 2019