The paper 'Interactive Whiteboards in educational practice: the research literature reviewed' has been made available for download here .  This publication was planned as background information for the Utrecht University Summerschool course 'Using Interactive Whiteboards to support discipline-specific pedagogies'.
A recently published Dutch version, produced for the Expertise Centre on DigiBoards at the Hogeschool Utrecht, was well received.
Kennisnet, the Dutch National Schoolnet referred to it and on some Edublogs the study was characterised as 'worth reading' (ICT op school) and 'balanced report' (Wilfried Rubens)

A similar study, focussing on IWB-use specifically in language education is under construction.