%0 Journal Article %A Allan Pinkus %A Dan Wulbert %T Extending $n$-convex functions %J Studia Mathematica %D 2005 %P 125-152 %V 171 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm171-2-2/ %R 10.4064/sm171-2-2 %G en %F 10_4064_sm171_2_2