Balancing competences? Proportionality as an instrument to regulate the exercise of competences after the PSPP judgment of the Bundesverfassungsgericht

Balancing competences? Proportionality as an instrument to regulate the exercise of competences after the PSPP judgment of the Bundesverfassungsgericht.   -- In:  European constitutional law review -- ISSN 1574-0196. -- Vol. 17, (2021), no. 2, s. 314-334.