TY  - JOUR
AU  - Powers, Victoria
TI  - Finite Spaces of Signatures
JO  - Canadian journal of mathematics
PY  - 1989
SP  - 808
EP  - 829
VL  - 41
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1989-037-3/
DO  - 10.4153/CJM-1989-037-3
ID  - 10_4153_CJM_1989_037_3
ER  -