%0 Journal Article %A G. Folland %T Lipschitz classes and Poisson integrals on stratified groups %J Studia Mathematica %D 1979 %P 37-55 %V 66 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-66-1-37-55/ %R 10.4064/sm-66-1-37-55 %G en %F 10_4064_sm_66_1_37_55