Grey Literature is:
"That which is produced on all levels of government, academics, business and industry in print and electronic formats, but which is not controlled by commercial publishers."
-The Fourth International Conference on Grey Literature in Washington, DC 199
Census, economic and other data sources
Conference proceedings and abstracts
Databases of ongoing research
Electronic networks (Listserv archives, etc.)
Informal communications (phone conversations, email, meetings, etc.)
Preprints of e-journal articles
Registered clinical trials
Research reports (completed and uncompleted)
Theses and Dissertations
This video presentation(3:00) introduces Grey Literature.