The IP war: apocalypse or revolution? - Tsvi Gal; Howard M. Singer; Laird Popkin (Digital Rights Management Workshop, 2003)

Comcast's ISP Experiences in a Proactive Network Provider Participation for P2P (P4P) Technical Trial. - Chris Griffiths; Jason Livingood; Laird Popkin; Richard Woundy; Yang Richard Yang (RFC, 2009)