1. Ackermann (2010): Vodafone: Price Regulation as a Substitute for Intervention under Article 102 TFEU, JECLP 2010, 426
2. Ackermann (2012): Excessive Pricing and the Goals of Competition Law, in: Zimmer (Ed.): The Goals of Competition Law, 2012, p. 349
3. Ackermann (2014a): The Interaction of Public and Private Antitrust Enforcement – The Calculation of Fines and Damages, in: Hüschelrath/Schweitzer (Eds.), Public and Private Enforcement of Competition Law in Europe. Legal and Economic Perspectives, 2014
4. Ackermann (2014b): State Aid for Banks in the Financial Crisis: The Commission’s New and Stronger Role, in: Ringe/Huber (Eds.), Legal challenges in the global financial crisis. Bail-outs, the Euro, and regulation, 2014, p. 149
5. Ackermann/Petzold (2011): Energieregulierung und Kartellaufsicht, in: Baur/Salje/Schmidt-Preuß (Eds.), Regulierung in der Energiewirtschaft, 2011