University of Manitoba Libraries supports the following:
“Information produced on all levels of government, academics, business and industry in electronic and print formats not controlled by commercial publishing, i.e. where publishing is not the primary activity of the producing body.” (1)
Grey literature can include dissertations, conference proceedings, trials data, reports, white papers, and other documents. Depending on the research question, grey literature can be an important source, as in questions of government policy, or to balance publication bias.
1.Farace DJ, Frantzen J, editors. Sixth international conference on grey literature: work on grey in progress. Grey literature 2004 conference proceedings; Dec. 6-7, 2004. Amsterdam: Text Release; 2005.
Tools and resources for grey literature
Dissertations/Theses (will also be retrieved in some databases such as CINAHL, Embase)
Grey literature databases and websites