TY  - JOUR
AU  - L. A. Chelysheva
TI  - On the theory of generalized characteristic numbers
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 1616
EP  - 1624
VL  - 4
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_9_a6/
LA  - ru
ID  - DE_1968_4_9_a6
ER  -