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Grey Literature

Grey Literature is being increasingly recognised as an essential aspect of medical and clinical research but in many cases it still remains difficult to find, retrieve and assess.

The Grey Literature pages will guide you through this tricky area to help you find appropriate and reliable evidence to support your evidence-based practice.



North Grey Literature Collection


Grey Literature: index and alternative sources and resources

Grey Matters: a practical tool for searching health-related grey literature  From CADTH in Canada


Suggested places to search for Grey Literature

Formal Bibliographic Databases

NICE Evidence Search

PROQUEST - PILOTSPublished International Literature On Traumatic Stress

Cochrane Library

HMIC- library catalogues of the King's Fund and DH. Lots of UK Health Policy,Circulars, Think Tank material etc.

Repositories Institutional

CORE Aggregates open access research outputs from repositories and journals worldwide

OpenDoar Direcory of academic open access repositories

Oaister - OCLC, uses Open Archives Initiative Protocol for Metadata Harvesting.

BASE - Provides access to more than 100 million documents from more than 5,000 sources.

Library Catalogues

COPAC Brings together the catalogues of c.90 major UK and Irish libraries

British Library

Web Search Tools

TRIP Database A clinical search engine designed to allow users to quickly and easily find and use high-quality research evidence to support their practice and/or care.

Prevention Information & Evidence eLibrary UKHF facilitates and researches the exchange and dissemination of information

CASH A collaborative project provided by a network of librarians and knowledge managers in the health sector .

MEDNAR (USA) Free, medically-focused deep web search engine. Theses

eTHOS- UK's national thesis service which aims to maximise the visibility and availability of the UK's doctoral research theses.

Global ETD Search- Search the 4,872,302 electronic theses and dissertations contained in the NDLTD archive:

OATD - Open Access Theses and Dissertations Advanced research and scholarship. Theses and dissertations, free to find, free to use.

DART-Europe E-theses Portal- A partnership of research libraries and library consortia working together to improve access to European research theses.

Websites & Bulletins

Grey Literature Report Produced by the The New York Academy of Medicine between 1999 - 2016, Grey literature publications in health services research and selected urban health topics. (From 2017, the website and database will be discontinued but the resources will still be accessible.)

King's Fund The King's Fund's Information and Knowledge Services provide a unique and free source of information on health and social care policy and management

Nuffield Trust Provides evidence-based research and policy analysis.

The Health Foundation Publications are available to download. Hard copies of many publications can also be ordered free of charge.

NESTA Original research and influential policy work in the field of innovation.