“…One of the most quoted definitions comes from David Wood who describes grey literature as “literature which is not readily available through normal bookselling channels, and therefore difficult to identify and obtain” (as cited in Auger, 1998, p. 3). Using this definition, grey literature includes unpublished conference presentations, theses and dissertations, technical and research reports, trade literature, datasets, government publications, bulletins, and newsletters (Auger, 1998; Blomqvist and Nielsen, 2002; Sulouff et al , 2005; Tripathi et al , 2006). Other descriptions that help define grey literature include: uncertain availability, poor bibliographic control, nonprofessional format and layout, and low print runs (Auger, 1998; Sellie, 2006).…”