TY  - JOUR
AU  - A. M. Vinogradov
AU  - V. A. Yumaguzhin
TI  - Differential invariants of webs on 2-dimensional manifolds
JO  - Matematičeskie zametki
PY  - 1990
SP  - 26
EP  - 37
VL  - 48
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_48_1_a4/
LA  - ru
ID  - MZM_1990_48_1_a4
ER  -