TY  - JOUR
AU  - Bernard Host
AU  - Bryna R. Kra
TI  - Nonconventional ergodic averages and nilmanifolds
JO  - Annals of mathematics
PY  - 2005
SP  - 397
EP  - 488
VL  - 161
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.161.397/
DO  - 10.4007/annals.2005.161.397
LA  - en
ID  - 10_4007_annals_2005_161_397
ER  -