I think Eric Von Hippel is one of the best known advocates: http://web.mit.edu/evhippel/www/ http://web.mit.edu/evhippel/www/ Here is his book for free downlo

I think Eric Von Hippel is one of the best known advocates: http://web.mit.edu/evhippel/www/ http://web.mit.edu/evhippel/www/ Here is his book for free download http://web.mit.edu/evhippel/www/democ1.htm http://web.mit.edu/evhippel/www/democ1.htm