Hilbert $C^*$-bimodules over commutative $C^*$-algebras and an   isomorphism condition for quantum Heisenberg manifolds
  A study of Hilbert $C^*$-bimodules over commutative $C^*$-algebras is carried out and used to establish a sufficient condition for two quantum Heisenberg manifolds to be isomorphic. 
Beatriz Abadie, and Ruy Exel