IJCAI paper "A dynamic logic of normative systems" by A. Herzig, E. Lorini, F. Moisan, N. Troquard (submission 1161)

ERRATUM

The claim of Theorem 1 saying that PDL-PA is PSPACE-complete is false.
In a corrected version of the paper (accessible at http://www.irit.fr/~Andreas.Herzig/P/Ijcai11.html), we have restricted
the logic to the star-free fragment. This version is indeed
PSPACE-complete. This is the only difference between the two versions.