- Author: Gerard H. A. Visser, Kurt Hecher, Christoph Lees, Christoph Lees (editor), Kurt Hecher (editor), Gerard H. A. Visser (editor)
- Language: English
- Year: 2018
- Author: Gerard H. A. Visser, Kurt Hecher, Christoph Lees, Christoph Lees (editor), Kurt Hecher (editor), Gerard H. A. Visser (editor)
- Language: English
- Year: 2018
- Author: Christoph Lees Gerard H. A. Visser Kurt Hecher
- Language: English
- Year: 2018
- Author: K H Nicolaides, G Rizzo, Kurt Hecher
- Language: English
- Year: 2000