%0 Journal Article %A David Grow %A Matt Insall %T Further properties of an extremal set of uniqueness %J Colloquium Mathematicum %D 1998 %P 33-39 %V 77 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-77-1-33-39/ %R 10.4064/cm-77-1-33-39 %G en %F 10_4064_cm_77_1_33_39