@article{4a95b225efef49f691cb51530e816f6b,
title = "Extensions of symplectic groupoids and quantization",
author = "Alan Weinstein and Ping Xu",
note = "Funding Information: *) Research partially supported by NSF Grant DMS-87-01609 and DOE contract AT 381-ER 12097. Some of the work of the first author was carried out at the Mathematical Sciences Research Institute.",
year = "1991",
doi = "10.1515/crll.1991.417.159",
language = "English (US)",
volume = "1991",
pages = "159--190",
journal = "Journal fur die Reine und Angewandte Mathematik",
issn = "0075-4102",
publisher = "Walter de Gruyter GmbH",
number = "417",
}