Grey Literature is a term used to describe information that is made available by organizations, often non-commercial, aimed at an academic or professional audience, but not published or distributed by mainstream commercial publishers.
Some examples of Grey Literature resources are:
During the 12th Conference on Grey Literature held in Prague in 2010, J. Schopfel, from the University of Lille, proposed a comprehensive definition of Grey Literature, known as the 'Prague Definition':
Grey Literature "stands for manifold document types produced on all levels of government, academics, business and industry in print and electronic formats that are protected by intellectual property rights, of sufficient quality to be collected and preserved by library holdings or institutional repositories, but not controlled by commercial publishers i.e., where publishing is not the primary activity of the producing body".
Source: Schopfel, Joachim. (2010) "Towards a Prague Definition of Grey Literature". OpenGrey.eu, opengrey.eu/item/display/10068/700015-2/ Accessed 23 November 2022
This work is licensed under CC BY-NC-SA 4.0