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grey literature


n. ~ Reports and other materials printed for distribution outside commercial publishing channels.


'Grey literature' connotes publications with limited distribution and with subject matter of a professional, often academic, nature. The phrase is not generally used to describe fanzines, underground publications, family newsletters, or similar materials.

(NY Acad of Medicine Library 2002) In general, grey literature publications are non-conventional, fugitive, and sometimes ephemeral publications. They may include, but are not limited to the following types of materials: reports (pre-prints, preliminary progress and advanced reports, technical reports, statistical reports, memoranda, state-of-the art reports, market research reports, etc.), theses, conference proceedings, technical specifications and standards, non-commercial translations, bibliographies, technical and commercial documentation, and official documents not published commercially (primarily government reports and documents) [citing Alberani, 1990].