TY  - JOUR
AU  - B. Balser
TI  - Birkhoff's reduction problem
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2004
SP  - 1047
EP  - 1059
VL  - 59
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_2004_59_6_a2/
LA  - en
ID  - RM_2004_59_6_a2
ER  -