- Author: Jan Nijman, Harm J. de Blij, Peter O. Muller
- Language: English
- Year: 2016
- Author: Harm J. de Blij Peter O. Muller Jan Nijman
- Language: English
- Author: Harm J. de Blij Peter O. Muller Jan Nijman Antoinette M. G. A. WinklerPrins
- Language: English
- Year: 2010
- Author: H. J. de Blij Peter O. Muller
- Language: English
- Year: 2010