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Related to gray literature: Grey literature
reports containing data, for example, on health and disease in a population, which are otherwise unpublished or have limited distribution. Examples include local health department reports and master's and doctoral dissertations lodged in university libraries.
Examples Conference proceedings, abstracts of the research presented at conferences, unpublished theses, dissertations, government reports, technical reports, standards and specifications, translations, or other types of documentation.
gray literatureScience communication A popular term for a report or manuscript circulated or published by unconventional routes; GL may not receive the attention accorded communications submitted to peer-reviewed journals or other forums. See Throwaway journal. Cf Peer-reviewed journal.
gray lit·er·a·ture(grā lit'ĕr-ă-chŭr)
Reports and other documents that are unpublished or have limited distribution, such as local health department reports, conference proceedings, and academic theses and dissertations; limited indexing, inaccessibility, and questionable authenticity (or validity) all diminish the usefulness of such materials.