%0 Journal Article %A J. Scott Carter %T Extending immersed circles in the sphere to immersed disks in the ball. %J Commentarii mathematici Helvetici %D 1992 %P 337-348 %V 67 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140273/ %F CMH_1992__67_3_140273