TY  - JOUR
AU  - V. V. Lychagin
TI  - Characteristic classes of solutions of differential equations
JO  - Doklady Akademii Nauk
PY  - 1983
SP  - 1320
EP  - 1324
VL  - 271
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1983_271_6_a8/
LA  - ru
ID  - DAN_1983_271_6_a8
ER  -