TY  - JOUR
AU  - V. F. Lazutkin
TI  - An analytic integral along the separatrix of the semistandard map:existence and an exponential estimate for the distance between the stable and unstable separatrices
JO  - Algebra i analiz
PY  - 1992
SP  - 110
EP  - 142
VL  - 4
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_1992_4_4_a4/
LA  - en
ID  - AA_1992_4_4_a4
ER  -