TY  - JOUR
AU  - V. Bangert
TI  - A uniqueness theorem for Zn-periodic variational problems.
JO  - Commentarii mathematici Helvetici
PY  - 1987
SP  - 511
EP  - 531
VL  - 62
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1987__62_140095/
ID  - CMH_1987__62_140095
ER  -