- Die Doppelte Staatsbürgerschaft Im Völkerrecht (Double Citizenship in International Law)
. - The Security Council and the Fight Against Terrorisms: Does SC Resolution 2249 (2015) Lead to a More Grotian or a More Kantian International Society?
- Understanding Solidarity within EU Law: An Analysis of the “Islands of Solidarity” with Particular Regard to Monetary Union
. - The League of Nations and the Protection of Minorities – Rediscovering a Great Experiment
. - The ICJ Advisory Opinion on Kosovo: Different Perspectives of a Delicate Question
. - WTO Law and Human Rights: Bringing Together Two Autopoietic Orders
. - And with Success Comes Pardon Hand in Hand”: Some Essential Features of R2P and Humanitarian Intervention Drawn from History of International Law
. - Jus Post Bellum and the Responsibility to Rebuild
. - EU Development Cooperation – A Stock-Taking and a Vision for the Future