TY  - BOOK
A1  - Baumgärtel, Hellmut
T1  - Actions of finite abelian groups on abelian C*-algebras Z: Second cohomology and description by C*-extensions F ) Z
T2  - Preprint / SFB 288, Differentialgeometrie und Quantenphysik
Y1  - 1999
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/21602
VL  - 383
CY  - Berlin
ER  -