EDUCAUSE Review, vol. 40, no. 2 (March/April 2005): 7273.
http://www.educause.edu/er/erm05/erm05210.asp
I have some to add here 
Arguably the best economic theoricist studying FOSS is Yochai Benkler. His papers are widerly read, really interesting, and all available on the internet:
http://www.benkler.org/
And about the culture of those crazy FOSS developers, there's a lot of anthropologists interested in us. Biella Coleman is one of the leading lights on this front, lecturing at the Uni of Chicago:
http://www.healthhacker.com/biella/
her work is also available online. Amazing.
Arguably the best economic theoricist studying FOSS is Yochai Benkler. His papers are widerly read, really interesting, and all available on the internet:
http://www.benkler.org/
And about the culture of those crazy FOSS developers, there's a lot of anthropologists interested in us. Biella Coleman is one of the leading lights on this front, lecturing at the Uni of Chicago:
http://www.healthhacker.com/biella/
her work is also available online. Amazing.