Continuous-Trace Groupoid Crossed Products
  Let $G$ be a second countable, locally compact groupoid with Haar system, and let $\mathcal{A}$ be a bundle of $C^{\ast}$-algebras defined over the unit space of $G$ on which $G$ acts continuously. We determine conditions under which the associated crossed product $C^{\ast}(G;\mathcal{A})$ is a continuous trace $C^{\ast}$-algebra. 
Igor Fulman (Arizona State University), Paul S. Muhly (University of   Iowa), Dana P. Williams (Dartmouth College)