%0 Journal Article %A Valentino Magnani %T Characteristic points, rectifiability and perimeter measure on stratified groups %J Journal of the European Mathematical Society %D 2006 %P 585-609 %V 8 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/68/ %R 10.4171/jems/68 %F JEMS_2006_8_4_a1