Administrative Law of the European Union: Oversight, with Alfred C. Aman and Alan C. Raul; George Bermann, et al., series eds.; ABA Publishing 2008, ISBN978-1-60442-141-5
Transatlantic Regulatory Cooperation: Legal Problems and Political Prospects, co-editor with George Bermann and Matthias Herdegen; Oxford University Press 2000
"Agents Without Principals?: Delegation in an Age of Diffuse and Fragmented Governance", in Reframing Self-Regulation in European Private Law, Fabrizio Cafaggi, ed.; Kluwer Law International, 2006