Books by the SEMCO founder, Ricardo Semler:
Maverick - http://www.amazon.com/Maverick-Success-Behind-Unusual-Workpl...
The Seven Day Weekend - http://www.amazon.com/Seven-Day-Weekend-Changing-Work-Works-...
[1] http://www.amazon.com/Maverick-Success-Behind-Unusual-Workpl...
Some excerpts off his book on 37signals: http://37signals.com/svn/posts/945-excerpts-from-ricardo-sem...
His book: http://www.amazon.com/Maverick-Success-Behind-Unusual-Workpl...
There are many companies that operate using democracy as an organizing principle - Semco is the great-granddaddy of them all (two books - Maverick[1] and the 7 Day Weekend[2] - were written by Semco's founder, Ricardo Semler, about how Semco operates).
Other well-known democratically-run companies include Zappos, WL Gore, DaVita (a $12B company), and Dreamhost.
If you're interested, take a look at WorldBlu[3] for more - they've been building a community of these kinds of companies, have tons of resources on their site, and even have a conference on organizational democracy.
[1] - http://www.amazon.com/The-Seven-Day-Weekend-Changing-Works/d...
[2] - http://www.amazon.com/books/dp/0446670553
[3] - http://worldblu.com/
Here are a couple of top Google results: http://www.managementexchange.com/blog/forget-empowerment-ai...
http://www.ict.swin.edu.au/personal/ebihari/
and even a version of The Art of War: http://www.worldmarkacademy.com/moodle/file.php/1/3.pdf