TY  - JOUR
AU  - Alex Kumjian
AU  - David Pask
AU  - Aidan Sims
TI  - $C^*$-algebras associated to coverings of $k$-graphs
JO  - Documenta mathematica
PY  - 2008
SP  - 161
EP  - 205
VL  - 13
UR  - http://geodesic.mathdoc.fr/articles/10.4171/dm/247/
DO  - 10.4171/dm/247
ID  - 10_4171_dm_247
ER  -