TY  - JOUR
AU  - L. M. Lerman
AU  - Ya. L. Umanskii
TI  - Necessary conditions for the existence of heteroclinic trajectories in an integral Hamiltonian system with two degrees of freedom
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1983
SP  - 150
EP  - 151
VL  - 38
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1983_38_5_a14/
LA  - en
ID  - RM_1983_38_5_a14
ER  -