2014 · Lex Wunderink, Roeline Nieboer, et al. · University of Groningen research database (University of Groningen / Centre for Information Technology) · 2
2014 · Aleman, Andre, van der Velde, Jorien, et al. · University of Groningen research database (University of Groningen / Centre for Information Technology)
2012 · Wunderink, Lex, Nieboer, Roeline, et al. · University of Groningen research database (University of Groningen / Centre for Information Technology)
2011 · Lex Wunderink, Roeline Nieboer, et al. · University of Groningen research database (University of Groningen / Centre for Information Technology)