Well this is only quick index (yet):

• HTB qdisc (with HTB3 update)
• Qdisc measurer/simulator
• Older HTB vs. CBQ mesurment (obsolete)
• Some other (and older) qos things I did
• IMQ driver
• U32 classifier stuff

The relevant Linux QoS related papers

• Linux Network Traffic Control - Implementation Overview
• Diffserv on Linux