TY  - JOUR
AU  - C. Praagman
TI  - Roots, iterations and logarithms of formal automorphisms.
JO  - Aequationes mathematicae
PY  - 1987
SP  - 251
EP  - 259
VL  - 33
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1987__33_137216/
ID  - AM2_1987__33_137216
ER  -