%0 Journal Article %A Stefan Immervoll %T On the classification of isoparametric hypersurfaces with four distinct curvatures in spheres %J Annals of mathematics %D 2008 %P 1011-1024 %V 168 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2008.168.1011/ %R 10.4007/annals.2008.168.1011 %G en %F 10_4007_annals_2008_168_1011