When you want to find original material on a complex topic, going to Google does not always help: serious articles in serious journals usually have few inbound links.
To find some material, I recommend to look at
http://www11.tdnet.com/frames.asp , where you can take the title of the article for subsequent googling
As an example, search for information on search engines. The phrase Search Engines usually leads from adequate resources only to the wiki, everything else is garbage.