TY  - JOUR
AU  - E. R. Avakov
AU  - A. A. Agrachev
AU  - A. V. Arutyunov
TI  - The level set of a smooth mapping in a neighborhood of a singular point, and zeros of a quadratic mapping
JO  - Sbornik. Mathematics
PY  - 1992
SP  - 455
EP  - 466
VL  - 73
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/SM_1992_73_2_a8/
LA  - en
ID  - SM_1992_73_2_a8
ER  -