%0 Journal Article
%A Vera Sós
%T On a problem of S. Hartman about normal forms
%J Colloquium Mathematicum
%D 1959
%P 155-160
%V 7
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-7-2-155-160/
%R 10.4064/cm-7-2-155-160
%G en
%F 10_4064_cm_7_2_155_160