TY  - JOUR
AU  - Harvey Rosen
TI  - Spanning disks for domains with free fundamental groups
JO  - Colloquium Mathematicum
PY  - 1977
SP  - 69
EP  - 72
VL  - 38
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-38-1-69-72/
DO  - 10.4064/cm-38-1-69-72
LA  - en
ID  - 10_4064_cm_38_1_69_72
ER  -