%0 Journal Article
%A C. Praagman
%T Roots, iterations and logarithms of formal automorphisms.
%J Aequationes mathematicae
%D 1987
%P 251-259
%V 33
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1987__33_137216/
%F AM2_1987__33_137216