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Grey Literature in the Health Sciences: About Grey Literature

Provides resources and strategies for finding and using grey literature in health science research.

Guide to Grey Literature

Grey Literature is:

"That which is produced on all levels of government, academics, business and industry in print and electronic formats, but which is not controlled by commercial publishers."

-The Fourth International Conference on Grey Literature in Washington, DC 1999

  • This guide provides resources and strategies for finding and using Grey Literature in health science research. 
  • Click on the tabs (and subtabs) above to navigate the guide.
  • Contact a Lister Hill Librarian for assistance.

Types of Grey Literature

  • Blogs
  • Census, economic and other data sources
  • Conference proceedings and abstracts
  • Databases of ongoing research
  • Electronic networks (Listserv archives, etc.)
  • Informal communications (phone conversations, email, meetings, etc.)
  • Newsletters
  • Preprints of e-journal articles
  • Registered clinical trials
  • Research reports (completed and uncompleted)
  • Technical reports 
  • Theses and Dissertations
  • White papers

Grey Literature Overview

This video presentation(3:00) introduces Grey Literature. 

Please Note!

The inclusion of grey literature and unpublished reports in literature reviews is encouraged, particularly in certain topic areas such as public health. However, as with any other study reports, it is necessary to critically evaluate grey literature materials for the authority of the source, any potential for bias, reliability and reproducibility of study methodology and completeness of reporting. (See also the University of Louisville's research guide on "Evaluating Information Sources" at

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