Conference paper (2010) - C van den Akker (author), L Aroyo (author), J van Ossenbruggen (author), G Schreiber (author), R Segers (author), P Vossen (author), B Wielinga (author), A Cybulska (author), M van Erp (author), P Gorgels (author), L Hollink (author), C Jager (author), S Legene (author), L van der Meij (author), J Oomen (author)

Journal article (2009) - P van Waart (author), Ingrid J. Mulder (author), C van den Akker (author), J Marseille (author)