%0 Journal Article %A Sichun Wang %T A radial estimate for the maximal operator associated with the free Schrödinger equation %J Studia Mathematica %D 2006 %P 95-112 %V 176 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm176-2-1/ %R 10.4064/sm176-2-1 %G en %F 10_4064_sm176_2_1