Journal article (2006) - I Schoemaker (author), PPW Hoefnagel (author), H.J. Simonsz (author), TJ Mastenbroek (author), CF Kolff (author), S Schutte (author), Frans van der Helm (author), Stephen J. Picken (author), S.J. Picken (author), AFC Gerritsen (author), PA Wielopolski (author), H Spekreijse (author)