by John » Fri Sep 21, 2007 9:33 am
James
I would suggest using Google Scholar, because perhaps as many as 20% of the articles that come up have a free copy online, in addition to their journal version (which may itself be open access). There is no easy way to tell (a URL ending in .pdf is a good sign, as is .edu), and if you really need the article, you can pay, as with ingenta.
At the Public Knowledge Project, we are doing what we can to help journals increase the percentage of freely available research and scholarship.
Thanks
John
John Willinsky
Public Knowledge Project
University of British Columbia