TY  - JOUR
AU  - Mather, John N.
TI  - Variational construction of orbits of twist diffeomorphisms
JO  - Journal of the American Mathematical Society
PY  - 1991
SP  - 207
EP  - 263
VL  - 04
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1991-1080112-5/
DO  - 10.1090/S0894-0347-1991-1080112-5
ID  - 10_1090_S0894_0347_1991_1080112_5
ER  -