@article{409fdd82020d4d5ab91f040c022283f7,
title = "S1-bundles and gerbes over differentiable stacks",
abstract = "We study S1-bundles and S1-gerbes over differentiable stacks in terms of Lie groupoids, and construct Chern classes and Dixmier-Douady classes in terms of analogues of connections and curvature.",
author = "Kai Behrend and Ping Xu",
note = "Funding Information: We thank the Research Institute for the Mathematical Sciences in Kyoto, the Ecole Polytechnique and Peking University for hospitality and support of the research summarized in this Note. This research is partially supported by NSF grant DMS00-72171 and NSERC grant 22R81946.",
year = "2003",
month = jan,
day = "15",
doi = "10.1016/S1631-073X(02)00025-0",
language = "English (US)",
volume = "336",
pages = "163--168",
journal = "Comptes Rendus Mathematique",
issn = "1631-073X",
publisher = "Academie des sciences",
number = "2",
}