- Author: Jürgen Appell, Espedito De Pascale, Alfonso Vignoli
- Language: English
- Year: 2004
- Author: Jürgen Appell, Józef Banas, Nelson José Merentes Díaz
- Language: English
- Year: 2013
- Author: Jürgen Appell (auth.)
- Language: German
- Year: 2009
- Author: Prof. Jürgen Appell Dr. Martin Väth (auth.)
- Language: German
- Year: 2005
- Author: Jürgen Appell (auth.)
- Language: German
- Year: 2009