Answered By: Ann Craig
Last Updated: Aug 14, 2017     Views: 85

'Grey literature' is a phrase used to describe research that is published in non-conventional places and are not indexed by the major databases. Examples could be conference papers or government reports.

Use the following sources to track down grey literature. 


System for Information on Grey Literature in Europe. The website covers unpublished European literature on Science, Technology, Biomedical Science, Economics, Social Science and Humanities.

The Grey Literature Report

An online publication covering (mostly) American grey literature

ELDIS - International Development

ELDIS is an online information service providing free access to relevant, up-to-date and diverse research on international development issues.

GreyNet International

This search engine provides links to grey literature sources.


Bielefeld Academic Search Engine