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Grey Literature: Home

An overview of what Grey literature is, why it matters, and where to find it.

What is Grey Literature?

Grey literature is any literature that has been published by non-traditional means and is often excluded from large databases. Common sources of Grey literature include, government departments, research institutes and conference proceedings; additionally, posts on social media sites (such as Twitter, YouTube, etc.) are another source of Grey literature materials. Because it's excluded from major databases, grey literature can often be hard to find materials. 

However, these materials often represent an important part of your research. Incorporating grey literature into your research is important because; 

  • It helps to minimize bias
  • Makes your research as thorough as possible
  • Enables you to find clinical trials or studies with negative results
  • Helps you find brand new evidence not yet published in a peer-reviewed journal
  • Grey literature results sometimes make reference to published literature that your search terms may have missed

Finding Gray/Grey Literature

Below are some resources that can help you identify organizations and/or search directly for grey literature.

          Access to more than 3 million scientific, technical, engineering, and related business information from U.S. gov't

          An open-source medical search engine designed to provide evidence for clinical decision-making. Includes research                    evidence, images, videos, patient information leaflets, educational courses, and news

          A tutorial by the University of Toronto libraries on what Grey literature is and how to find it.

          The largest collection of Grey/Gray literature

 

How Do I Search Grey Literature?

Finding grey literature and searching it can be challenging. But there are a few approaches that you can take to add some structure to your search of this type of information:

  • Search databases that specialize in grey literature:  See the box below for more information.
  • Search for theses and dissertations: There are a number of databases dedicated to theses and dissertations, which you can search using your search terms. 
  • Search clinical trials: There may be clinical trials being conducted that are relevant to your research question, but that haven't been published yet or never were published. 
  • Identify government agencies and international and non-governmental organizations that might publish technical papers and reports on your topic. Search their websites or any online libraries that they may provide.  
  • Search conference proceedings and newsletters:  Identify professional organizations that have and/or conferences at which researchers might be presenting work related to your topic.  Search those conference proceedings or newsletters on the organization's website or by contacting organizational boards for access to past proceedings that may not be online. 
  • Contact known researchers in the field to determine if there are any ongoing or unpublished studies that s/he may be aware of.
  • Search professional and trade magazines. Professional magazines contain literature that is written by professionals in the field for other professionals in the field, but that may not be about research. Trade magazines contain advertisements and news very specific to a topic or industry.

Examples of Grey Literature

  • Blog posts & Tweets
  • Census data 
  • Clinical Trials
  • Conference Abstracts & Proceedings
  • Dissertations/Theses
  • Meetings
  • Registered Research
  • Technical Reports & Systematic Reviews
  • Patents 
  • Newsletters
  • White Papers

Librarian

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Tenley Sablatzky
she/her
Contact:
Undergraduate Medical Academy
Prairie View A&M University
O'Banion Science Building, 1st Floor, 129K
9362613075
Website

John B. Coleman Library
Mailing Address: P.O. Box 519, MS 1040, Prairie View, Texas 77446
Physical Address: L.W. Minor St. / University Drive, Prairie View, Texas 77446
Reference: (936) 261-1535, Circulation: (936) 261-1542
Email: askalibrarian@pvamu.edu

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