- Author: Piet W.N.M. van Leeuwen Carmen Claver
- Language: English
- Year: 2020
- Author: Piet W. N. M. van Leeuwen (auth.) Piet W. N. M. Van Leeuwen Carmen Claver (eds.)
- Language: English
- Year: 2002
- Author: P W N M van Leeuwen, Carmen Claver
- Language: English
- Year: 2002
- Author: P W N M van Leeuwen, Carmen Claver
- Language: English
- Year: 2002
- Author: P.W. van Leeuwen Carmen Claver
- Language: English
- Year: 2000
- Author: Piet W.N.M. van Leeuwen Carmen Claver
- Language: English
- Year: 2002