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Grey Literature

Grey literature sources for research

Grey Literature

The Pisa Declaration describes Grey Literature as:
  • "A wealth of knowledge and information is produced by organizations, governments and industry, covering a wide range of subject areas and professional fields, not controlled by commercial publishing. 
  • These publications, data and other materials known as grey literature, are an essential resource in scholarly communication, research, and policy making for business, industry, professional practice, and civil society.
  • Grey literature is recognized as a key source of evidence, argument, innovation, and understanding in many disciplines including science, engineering, health, social sciences, education, the arts and humanities." (http://www.greynet.org/images/Pisa_Declaration,_May_2014.pdf) 


Grey literature can include:

  • Technical or research reports from government agencies
  • Reports from scientific research groups
  • Working papers from research groups or committees
  • Conference and meeting proceedings/abstracts
  • Dissertations and theses
  • Statistics
  • Patents
  • Archival materials
  • Unpublished or ongoing studies
  • Clinical practice guidelines not published in journals
  • Informal communications with experts ... and so much more ...

                  Image: Pixabay/myrfa CC0


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