Journal article (2010) - W Branderhorst (author), B. Vastenhouw (author), Brendan Vastenhouw (author), Frans van der Have (author), F. van der Have (author), F. Van Der Have (author), Frans Van Der Have (author), ELA Blezer (author), WK Bleeker (author), F. J. Beekman (author), F.J. Beekman (author), Freek J. Beekman (author), Freek Beekman (author)