The term Grey Literature describes documents and information sources of good quality, which are published for non-commercial reasons. They are often published and distributed by government agencies or departments, non-governmental organisations, academic research centres, or similar organisations.
While grey literature can be available to the public, it may also be distributed privately. This can make it harder to locate grey literature compared to information published in books or academic journals.
Examples of grey literature include government publications, official reports, academic dissertations, ‘Open Access’ journals, pamphlets and leaflets, etc.
OpenGrey combines the resources of major European information and document supply centres who joined in an association known as EAGLE : European Association for Grey Literature Exploitation.
(Funded by Health Care Libraries Unit North; delivered by Stockport NFT)
The North Grey Literature Collection holds the hard copy grey literature collection of the former North West Grey Literature Service. This site also contains a Grey Literature Knowledge Database to help you find health related grey literature.
(Produced by CADTH — the Canadian Agency for Drugs and Technologies in Health)
Grey Matters is a practical search tool for search health related grey literature. This checklist is intended for librarians; information specialists; and researchers who are producing systematic reviews, HTAs, drug assessments, or economic evaluations.
If you need help using any of these resources please contact your local .