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Grey / Gray Literature

What is gray literature?

Gray Literature refers to research (usually unpublished) and may include research reports, government reports, evaluations, theses, dissertations, webcasts, poster sessions, presentations, conference proceedings, PowerPoint Presentations, etc... 

Forms of Gray Literature
  • Technical reports
  • Pre-Prints
  • Fact Sheets
  • Standards
  • Patents
  • Working papers
  • Committee reports
  • Business documents
  • Newsletters
  • Government documents
  • Technical documentation (e.g., space shuttle)
  • Conference proceedings
  • White papers
  • Symposia
  • Bulletins
  • Unpublished works