%0 Journal Article
%T An embedding theorem for non smooth vector fields of step two
%A Ermanno Lanconelli
%A Annamaria Montanari
%J Le Matematiche
%D 1999
%I University of Catania
%X See directly the article.
%U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/346