Grey Literature

Changes to Library services during the COVID-19 lockdown.

Grey literature is an important source of information.

Grey literature is defined as "information produced on all levels of government, academics, business and industry in electronic and print formats not controlled by commercial publishing" ie. where publishing is not the primary activity of the producing body."ICGL Luxembourg definition, 1997. Expanded in New York, 2004


  • GreyNet International Directory of organizations in grey literature from GreyNet International
  • Open Grey
    A multidisciplinary database of the grey literature produced in European countries.
  • Google
    Search the internet for government and company reports, white papers, green papers, working papers, fact sheets and more.
  • BASE: Bielefeld Academic Search Engine
    The advanced search allows you to search for grey literature by country, data and source type, e.g. report, conference object or thesis. Produced by Bielefeld University Library.

Policy Reports and Working Papers


Think Tanks



  • ABZU 
    "Abzu is a guide to networked open access data relevant to the study and public presentation of the Ancient Near East and the Ancient Mediterranean world."

Government Websites

Content last reviewed: April 1, 2020