TY  - JOUR
AU  - R. Kaufman
TI  - Perfect sets in some groups
JO  - Studia Mathematica
PY  - 1970
SP  - 17
EP  - 21
VL  - 34
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-34-1-17-21/
DO  - 10.4064/sm-34-1-17-21
LA  - en
ID  - 10_4064_sm_34_1_17_21
ER  -