Paola De Castro and Sandra Salinetti, Quality of Grey Literature in the Open Access Era: Privilege and Responsibility, Publishing Research Quality, Spring 2004. Not even an abstract is free online to non-subscribers, at least so far. The rest of the Spring 2004 issue is dedicated to grey literature. (Thanks to Charles W. Bailey, Jr.) (PS: Although I've used deep links to the article and issue, they probably won't work for you. You'll have to register at the site and then hunt for the article and issue all over again. Transaction Publishers isn't trying to make it easy.)
Posted by
Peter Suber at 7/10/2004 01:51:00 PM.
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.