TY  - JOUR
AU  - M. A. Krasnosel'skii
AU  - V. V. Strygin
TI  - Principles of rotational invariance of a~vector field
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1965
VL  - 20
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1965_20_4_a24/
LA  - ru
ID  - RM_1965_20_4_a24
ER  -