TY  - JOUR
AU  - V. F. Lazutkin
TI  - Analytic integrals of a~semistandard mapping, and separatrix splitting
JO  - Algebra i analiz
PY  - 1989
SP  - 116
EP  - 131
VL  - 1
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_1989_1_2_a6/
LA  - ru
ID  - AA_1989_1_2_a6
ER  -