The 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 i.e. where publishing is not the primary activity of the producing body." (Luxembourg, 1997 - Expanded in New York, 2004)

Web Resources:

• Grey Literature report - New York Academy of Medicine.. A quarterly list of gray literature documents in the field of public health.

• CRISP Database Computer Retrieval of Information on Scientific Projects. It is a listing of biomedical research projects funded by the US National Institutes of Health. Includes contact information for institutions and individuals engaged in the research projects.

• OIAster - University of Michigan - collection of free, difficult-to-access resources from 327 institutions
• HSR Projects from National Information Center on Health Services Research and Health Care Technology includes information about ongoing health services research and public health projects
• HSRR (Health Services and Sciences Research Resources) searchable database of information about research datasets, instruments/indices and software.
• World Health Organization current bibliography Catalogs of publications by the World Health Organization and affiliated agencies, including technical and policy documents.
• NLM Gateway Gateway is "One-stop shopping" for an increasing number of the information resources of the National Library of Medicine (NLM).
• Google Scholar searches across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations.
• FDA Docket Management serves as the official repository for the administrative proceedings and rule-making documents for the FDA.

Databases: [Duke only]

• ClinicalTrials.gov is a registry of federally and privately supported clinical trials conducted in the United States and around the world. ClinicalTrials.gov provides information about a trial's purpose, who may participate, locations, and phone numbers for more details.

• Conference Papers Index Provides citations to papers and poster sessions presented at major scientific meetings around the world. Major topics include agriculture, biochemistry, chemistry, chemical engineering, forestry, biology, environmental science, soil science, biotech...

Other Guides to Grey Literature:

• Grey Matters: a practical tool for evidence-based searching Go beyond the “grey zone”: Take advantage of some of the best IS expertise among HTA agencies worldwide with CADTH’s new online resource for grey literature searching, Grey matters: a practical search tool for evidence- based medicine.
• Search for Grey Literature from University of British Columbia
• Gray Literature" from Wikipedia

• Grey Literature course syllabus from University of British Columbia
• Gray literature: Resources for locating unpublished research from Association of College & research Libraries
• Gray Literature and How to Find It from University of New Mexico Health Science Center