TY  - JOUR
AU  - I. U. Bronshtein
AU  - I. V. Nikolaev
TI  - Orbital normal forms and bifurcations of fields of linear elements in the plane
JO  - Differencialʹnye uravneniâ
PY  - 1995
SP  - 934
EP  - 938
VL  - 31
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1995_31_6_a1/
LA  - ru
ID  - DE_1995_31_6_a1
ER  -