Tor: the second generation onion router

This is the original Dingledine et al's Tor paper. Please consider it required reading.

Building incentives into Tor

This is the paper introducing the Tor's gold star incentive mechanism. It is optional reading

INFO6003 (2013) Tor: the second generation onion router -- Paper

This is the original Dingledine et al's Tor paper. Please consider it required reading.