%0 Journal Article %A E. Bayer-Fluckiger %A R. Parimala %T Cohomological Invariants for $G$-Galois Algebras and Self-Dual Normal Bases %J Documenta mathematica %D 2017 %P 1-24 %V 22 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/557/ %R 10.4171/dm/557 %F 10_4171_dm_557