Petersen, Niels Max Planck Institute for Research on Collective Goods, Max Planck Society;
Chatziathanasiou, Konstantin Max Planck Institute for Research on Collective Goods, Max Planck Society;
Petersen, N., & Chatziathanasiou, K. (2021). Balancing competences? Proportionality as an instrument to regulate the exercise of competences after the PSPP judgment of the bundesverfassungsgericht. European Constitutional Law Review, 17(2), 314-334. doi:10.1017/S1574019621000201.