TY  - JOUR
AU  - J. Scott Carter
TI  - Extending immersed circles in the sphere to immersed disks in the ball.
JO  - Commentarii mathematici Helvetici
PY  - 1992
SP  - 337
EP  - 348
VL  - 67
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140273/
ID  - CMH_1992__67_3_140273
ER  -