Coactions on Cuntz-Pimsner algebras
  We investigate how a correspondence coaction gives rise to a coaction on the associated Cuntz-Pimsner algebra. We apply this to recover a recent result of Hao and Ng concerning Cuntz-Pimsner algebras of crossed products of correspondences by actions of amenable groups. 
S. Kaliszewski, John Quigg and David Robertson
math.OA