TY  - JOUR
AU  - N. Kh. Rozov
TI  - The local section method for systems with refraction of trajectories
JO  - Doklady Akademii Nauk
PY  - 1972
SP  - 535
EP  - 538
VL  - 202
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a9/
LA  - ru
ID  - DAN_1972_202_3_a9
ER  -